📈 Percentage Change Calculator

Calculate percentage increase or decrease between numbers.

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📋 How to Use

1
Input

Fill in the required parameters

2
Execute

Click the generate/execute button

3
Result

View and copy your results

About This Tool

Calculate percentage increase or decrease between numbers.

How to Use

  • Enter or paste your data in the input fields above
  • Results update instantly - all processing in your browser
  • 100% free with no signup or account required

Tool Network

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function initTool() { document.getElementById('tool-app').innerHTML = '
'; } function doIt() { var oldV = parseFloat(document.getElementById('oldV').value), newV = parseFloat(document.getElementById('newV').value); if (isNaN(oldV)||isNaN(newV)) { document.getElementById('out').textContent='请输入有效数字'; return; } var change = ((newV-oldV)/oldV)*100; document.getElementById('out').innerHTML = '
'+(change>=0?'+':'')+change.toFixed(2)+'%
变化百分比
'; } window.addEventListener('DOMContentLoaded', initTool);