{"id":2673,"date":"2025-09-02T18:30:32","date_gmt":"2025-09-02T16:30:32","guid":{"rendered":"https:\/\/elementer.cz\/?page_id=2673"},"modified":"2026-04-23T08:58:10","modified_gmt":"2026-04-23T06:58:10","slug":"vypocet-procent","status":"publish","type":"page","link":"https:\/\/elementer.cz\/en\/nastroje\/vypocet-procent\/","title":{"rendered":"Percentage calculator"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"2673\" class=\"elementor elementor-2673\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f5bf704 e-con-full e-flex e-con e-parent\" data-id=\"f5bf704\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;shape_divider_bottom&quot;:&quot;wave-brush&quot;}\">\n\t\t\t\t<div class=\"elementor-shape elementor-shape-bottom\" aria-hidden=\"true\" data-negative=\"false\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 283.5 27.8\" 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class=\"elementor-element elementor-element-54c2047 e-flex e-con-boxed e-con e-child\" data-id=\"54c2047\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-a648bea e-con-full e-flex e-con e-child\" data-id=\"a648bea\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-2593539 e-con-full e-flex e-con e-child\" data-id=\"2593539\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-3bdef97 e-con-full e-flex e-con e-child\" data-id=\"3bdef97\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-797eab4 elementor-widget elementor-widget-heading\" data-id=\"797eab4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Kalkula\u010dka v\u00fdpo\u010dtu procent<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-03b71e8 elementor-widget elementor-widget-heading\" data-id=\"03b71e8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Zjist\u011bte jednodu\u0161e procenta<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-98bb6fd e-con-full e-flex e-con e-child\" data-id=\"98bb6fd\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-25c5925 elementor-align-left elementor-widget elementor-widget-button\" data-id=\"25c5925\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/elementer.cz\/nastroje\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">V\u0161echny n\u00e1stroje<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2170159 e-flex e-con-boxed e-con e-parent\" data-id=\"2170159\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-05e43a1 e-con-full e-flex e-con e-child\" data-id=\"05e43a1\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-8a6d05c e-con-full e-flex e-con e-child\" data-id=\"8a6d05c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f7b886f elementor-widget elementor-widget-text-editor\" data-id=\"f7b886f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h5><strong>Zjist\u011bte jednodu\u0161e procenta!<\/strong><\/h5><p>Kalkula\u010dka procent v\u00e1m pom\u016f\u017ee rychle spo\u010d\u00edtat procenta, jejich \u010d\u00e1st i nav\u00fd\u0161en\u00ed \u010di sn\u00ed\u017een\u00ed hodnoty.<br \/>A\u0165 u\u017e pot\u0159ebujete zjistit slevu v obchod\u011b, vypo\u010d\u00edtat da\u0148, \u00farok nebo jen ov\u011b\u0159it v\u00fdsledek p\u0159\u00edkladu, s touto kalkula\u010dkou to zvl\u00e1dnete b\u011bhem okam\u017eiku.<\/p><p><strong>Jak kalkula\u010dku pou\u017e\u00edt?<\/strong><\/p><p>\u2705 Zadejte \u010d\u00edslo, ze kter\u00e9ho chcete po\u010d\u00edtat procenta<br \/>\u2705 Vypl\u0148te procentn\u00ed hodnotu (nap\u0159. 15 %)<br \/>\u2705 Okam\u017eit\u011b uvid\u00edte v\u00fdsledek v\u00fdpo\u010dtu<br \/>\u2705 M\u016f\u017eete po\u010d\u00edtat i zp\u011btn\u011b \u2013 kolik je \u010d\u00edslo ur\u010dit\u00e9ho procenta<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1659e15 elementor-widget elementor-widget-n-accordion\" data-id=\"1659e15\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;default_state&quot;:&quot;all_collapsed&quot;,&quot;max_items_expended&quot;:&quot;one&quot;,&quot;n_accordion_animation_duration&quot;:{&quot;unit&quot;:&quot;ms&quot;,&quot;size&quot;:400,&quot;sizes&quot;:[]}}\" data-widget_type=\"nested-accordion.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"e-n-accordion\" aria-label=\"Accordion. Open links with Enter or Space, close with Escape, and navigate with Arrow Keys\">\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-2340\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"1\" tabindex=\"0\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-2340\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Co jsou to procenta? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-2340\" class=\"elementor-element elementor-element-0611583 e-flex e-con-boxed e-con e-child\" data-id=\"0611583\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0397795 elementor-widget elementor-widget-text-editor\" data-id=\"0397795\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Procenta vyjad\u0159uj\u00ed pom\u011br \u2013 kolik \u010d\u00e1st\u00ed ze sta (100) tvo\u0159\u00ed dan\u00e1 hodnota.<br \/>Nap\u0159\u00edklad 25 % znamen\u00e1 25 ze 100, tedy \u010dtvrtinu celku.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-2341\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"2\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-2341\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> K \u010demu se \u010dasto procenta pou\u017e\u00edvaj\u00ed? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-2341\" class=\"elementor-element elementor-element-a944423 e-con-full e-flex e-con e-child\" data-id=\"a944423\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6095904 elementor-widget elementor-widget-text-editor\" data-id=\"6095904\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>v\u00fdpo\u010det slev a akc\u00ed v obchodech<\/li><li>\u00faroky a dan\u011b<\/li><li>statistiky a pravd\u011bpodobnost<\/li><li>porovn\u00e1v\u00e1n\u00ed hodnot v \u010dase<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8e75221 e-con-full e-flex e-con e-child\" data-id=\"8e75221\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d84765c elementor-widget elementor-widget-html\" data-id=\"d84765c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div id=\"percent-tool\" style=\"max-width: 780px;\">\r\n  <h3 style=\"margin-bottom: 6px;\">Kalkula\u010dka procent<\/h3>\r\n  <p style=\"margin-top:0; color:#555;\">Vyberte typ v\u00fdpo\u010dtu a zadejte hodnoty.<br>V\u00fdsledky se p\u0159epo\u010d\u00edtaj\u00ed automaticky.<\/p>\r\n\r\n  <!-- V\u00fdb\u011br re\u017eimu -->\r\n  <div style=\"display:flex; gap:8px; flex-wrap:wrap; margin-bottom: 10px;\">\r\n    <button class=\"mode-btn\" data-mode=\"xp-of-y\" style=\"padding:8px 12px; border:1px solid #36A2EB; background:#fff; border-radius:10px; cursor:pointer;\">Kolik je X % z \u010d\u00edsla Y<\/button>\r\n    <button class=\"mode-btn\" data-mode=\"x-is-what-percent\" style=\"padding:8px 12px; border:1px solid #36A2EB; background:#fff; border-radius:10px; cursor:pointer;\">Kolik je X z Y %<\/button>\r\n    <button class=\"mode-btn\" data-mode=\"percent-change\" style=\"padding:8px 12px; border:1px solid #36A2EB; background:#fff; border-radius:10px; cursor:pointer;\">Zm\u0115na v %<\/button>\r\n    <button class=\"mode-btn\" data-mode=\"increase-decrease\" style=\"padding:8px 12px; border:1px solid #36A2EB; background:#fff; border-radius:10px; cursor:pointer;\">Zv\u00fd\u0161it\/Sn\u00ed\u017eit o %<\/button>\r\n  <\/div>\r\n\r\n  <!-- Formul\u00e1\u0159 -->\r\n  <div id=\"form-area\">\r\n    <!-- XP of Y -->\r\n    <div class=\"mode mode-xp-of-y\">\r\n      <label for=\"xp\" style=\"display:block;\"><b>Procenta (X %):<\/b><\/label>\r\n      <input type=\"number\" id=\"xp\" value=\"15\" step=\"0.01\" oninput=\"recalc()\" style=\"margin:5px 0 10px; width:200px;\"><br>\r\n\r\n      <label for=\"yp\" style=\"display:block;\"><b>Hodnota (Y):<\/b><\/label>\r\n      <input type=\"text\" id=\"yp\" value=\"1 000\" oninput=\"formatInput(this); recalc()\" style=\"margin:5px 0 10px; width:200px;\">\r\n    <\/div>\r\n\r\n    <!-- X is what percent of Y -->\r\n    <div class=\"mode mode-x-is-what-percent\" style=\"display:none;\">\r\n      <label for=\"xval\" style=\"display:block;\"><b>\u010c\u00e1st (X):<\/b><\/label>\r\n      <input type=\"text\" id=\"xval\" value=\"150\" oninput=\"formatInput(this); recalc()\" style=\"margin:5px 0 10px; width:200px;\"><br>\r\n\r\n      <label for=\"yval\" style=\"display:block;\"><b>Celek (Y):<\/b><\/label>\r\n      <input type=\"text\" id=\"yval\" value=\"1 000\" oninput=\"formatInput(this); recalc()\" style=\"margin:5px 0 10px; width:200px;\">\r\n    <\/div>\r\n\r\n    <!-- Percent change -->\r\n    <div class=\"mode mode-percent-change\" style=\"display:none;\">\r\n      <label for=\"fromVal\" style=\"display:block;\"><b>P\u016fvodn\u00ed hodnota (A):<\/b><\/label>\r\n      <input type=\"text\" id=\"fromVal\" value=\"1 000\" oninput=\"formatInput(this); recalc()\" style=\"margin:5px 0 10px; width:200px;\"><br>\r\n\r\n      <label for=\"toVal\" style=\"display:block;\"><b>Nov\u00e1 hodnota (B):<\/b><\/label>\r\n      <input type=\"text\" id=\"toVal\" value=\"1 150\" oninput=\"formatInput(this); recalc()\" style=\"margin:5px 0 10px; width:200px;\">\r\n    <\/div>\r\n\r\n    <!-- Increase \/ Decrease -->\r\n    <div class=\"mode mode-increase-decrease\" style=\"display:none;\">\r\n      <label for=\"baseVal\" style=\"display:block;\"><b>V\u00fdchoz\u00ed hodnota (Y):<\/b><\/label>\r\n      <input type=\"text\" id=\"baseVal\" value=\"1 000\" oninput=\"formatInput(this); recalc()\" style=\"margin:5px 0 10px; width:200px;\"><br>\r\n\r\n      <label for=\"pctID\" style=\"display:block;\"><b>Procenta (X %):<\/b><\/label>\r\n      <input type=\"number\" id=\"pctID\" value=\"15\" step=\"0.01\" oninput=\"recalc()\" style=\"margin:5px 0 10px; width:200px;\"><br>\r\n\r\n      <div style=\"display:flex; gap:12px; align-items:center; margin:8px 0 6px;\">\r\n        <label><input type=\"radio\" name=\"idMode\" value=\"increase\" checked onchange=\"recalc()\"> Zv\u00fd\u0161it<\/label>\r\n        <label><input type=\"radio\" name=\"idMode\" value=\"decrease\" onchange=\"recalc()\"> Sn\u00ed\u017eit<\/label>\r\n      <\/div>\r\n    <\/div>\r\n  <\/div>\r\n\r\n  <br>\r\n  <h4 style=\"margin: 8px 0;\">V\u00ddSLEDEK<\/h4>\r\n  <div id=\"resultBox\" style=\"background:#f9fbff; border:1px solid #e5f0fb; padding:12px 14px; border-radius:12px;\">\r\n    <p id=\"resultLine1\" style=\"margin:0 0 6px;\"><span style=\"color:#36A2EB;\"><b>V\u00fdsledek:<\/b><\/span> <span id=\"resMain\" style=\"color:#ee7b68; font-weight:bold; font-size:20px;\">0<\/span><\/p>\r\n    <p id=\"resultLine2\" style=\"margin:0; color:#666;\"><\/p>\r\n  <\/div>\r\n<\/div>\r\n\r\n<script>\r\n  \/\/ Barvy pro p\u0159\u00edpadn\u00e9 zv\u00fdrazn\u011bn\u00ed\r\n  const COLOR_PRIMARY = '#36A2EB';\r\n  const COLOR_ACCENT  = '#ee7b68';\r\n\r\n  \/\/ V\u00fdb\u011br re\u017eimu\r\n  const modeButtons = document.querySelectorAll('.mode-btn');\r\n  let currentMode = 'xp-of-y';\r\n\r\n  modeButtons.forEach(btn =>\r\n  {\r\n    btn.addEventListener('click', () =>\r\n    {\r\n      currentMode = btn.getAttribute('data-mode');\r\n      document.querySelectorAll('.mode').forEach(m => m.style.display = 'none');\r\n      document.querySelector('.mode-' + currentMode).style.display = 'block';\r\n\r\n      \/\/ UI aktivn\u00ed tla\u010d\u00edtko\r\n      modeButtons.forEach(b =>\r\n      {\r\n        b.style.background = '#fff';\r\n        b.style.borderColor = COLOR_PRIMARY;\r\n        b.style.color = '#111';\r\n      });\r\n      btn.style.background = COLOR_PRIMARY;\r\n      btn.style.borderColor = COLOR_PRIMARY;\r\n      btn.style.color = '#fff';\r\n\r\n      recalc();\r\n    });\r\n  });\r\n\r\n  \/\/ Form\u00e1tov\u00e1n\u00ed \u010d\u00edsel (CZ)\r\n  function formatNumber(num)\r\n  {\r\n    if (!isFinite(num))\r\n    {\r\n      return '\u2014';\r\n    }\r\n    return num.toLocaleString('cs-CZ');\r\n  }\r\n\r\n  \/\/ Form\u00e1tov\u00e1n\u00ed vstupu (cel\u00e1\/pen\u011b\u017en\u00ed hodnota)\r\n  function formatInput(input)\r\n  {\r\n    let value = input.value.replace(\/\\s\/g, '').replace(\/[^0-9.,-]\/g, '');\r\n    \/\/ Na vstupu povol\u00edme \u010d\u00e1rku i te\u010dku, p\u0159evedeme na te\u010dku\r\n    value = value.replace(',', '.');\r\n    \/\/ Rozd\u011bl\u00edme na \u010d\u00e1st p\u0159ed a po desetinn\u00e9 te\u010dce kv\u016fli mezer\u00e1m\r\n    const n = parseFloat(value);\r\n    if (!isNaN(n))\r\n    {\r\n      const parts = value.split('.');\r\n      const intPart = parts[0].replace('-', '');\r\n      const sign = n < 0 ? '-' : '';\r\n      const formattedInt = parseInt(intPart || '0', 10).toLocaleString('cs-CZ');\r\n      input.value = sign + (parts.length > 1 ? formattedInt + ',' + (parts[1] || '') : formattedInt);\r\n    }\r\n    else\r\n    {\r\n      input.value = '';\r\n    }\r\n  }\r\n\r\n  \/\/ Parsov\u00e1n\u00ed vstupu\r\n  function parseInput(value)\r\n  {\r\n    if (!value) { return 0; }\r\n    return parseFloat(value.replace(\/\\s\/g, '').replace(',', '.')) || 0;\r\n  }\r\n\r\n  function recalc()\r\n  {\r\n    const resMain = document.getElementById('resMain');\r\n    const line2   = document.getElementById('resultLine2');\r\n\r\n    let result = 0;\r\n    let expl   = '';\r\n\r\n    if (currentMode === 'xp-of-y')\r\n    {\r\n      const xp = parseFloat(document.getElementById('xp').value) || 0;\r\n      const y  = parseInput(document.getElementById('yp').value);\r\n      result = (xp \/ 100) * y;\r\n      expl = `${formatNumber(xp)} % z ${formatNumber(y)} je ${formatNumber(result)}.`;\r\n    }\r\n    else if (currentMode === 'x-is-what-percent')\r\n    {\r\n      const x = parseInput(document.getElementById('xval').value);\r\n      const y = parseInput(document.getElementById('yval').value);\r\n      if (y === 0)\r\n      {\r\n        result = NaN;\r\n        expl = 'Nelze d\u011blit nulou (Y = 0).';\r\n      }\r\n      else\r\n      {\r\n        result = (x \/ y) * 100;\r\n        expl = `${formatNumber(x)} je ${result.toFixed(2).replace('.', ',')} % z ${formatNumber(y)}.`;\r\n      }\r\n    }\r\n    else if (currentMode === 'percent-change')\r\n    {\r\n      const a = parseInput(document.getElementById('fromVal').value);\r\n      const b = parseInput(document.getElementById('toVal').value);\r\n      if (a === 0)\r\n      {\r\n        result = NaN;\r\n        expl = 'Nelze d\u011blit nulou (A = 0).';\r\n      }\r\n      else\r\n      {\r\n        result = ((b - a) \/ a) * 100;\r\n        const dir = result >= 0 ? 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Kalkula\u010dka procent v\u00e1m pom\u016f\u017ee rychle spo\u010d\u00edtat procenta, jejich \u010d\u00e1st i nav\u00fd\u0161en\u00ed \u010di sn\u00ed\u017een\u00ed hodnoty.A\u0165 u\u017e pot\u0159ebujete zjistit slevu v obchod\u011b, vypo\u010d\u00edtat da\u0148, \u00farok nebo jen ov\u011b\u0159it v\u00fdsledek p\u0159\u00edkladu, s touto kalkula\u010dkou to zvl\u00e1dnete b\u011bhem okam\u017eiku. Jak [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2697,"parent":611,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"elementor_canvas","meta":{"footnotes":""},"class_list":["post-2673","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Kalkula\u010dka v\u00fdpo\u010dtu procent | ELEMENTER<\/title>\n<meta name=\"description\" content=\"Kalkula\u010dka procent v\u00e1m rychle spo\u010d\u00edt\u00e1 v\u00fdpo\u010det procent X % z \u010d\u00edsla, kolik je \u010d\u00edslo procent, zm\u011bnu v procentech nebo zv\u00fd\u0161en\u00ed\/sn\u00ed\u017een\u00ed o procenta.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/elementer.cz\/en\/nastroje\/vypocet-procent\/\" \/>\n<meta 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