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Percentage Change Calculator
Percent increase or decrease between two values.
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Results
Percentage Change
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Difference
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How to use the Percentage Change Calculator
Classic: (new − old) ÷ |old| × 100. Positive = increase, negative = decrease.
Frequently Asked Questions
Percent change is always relative to the starting point — that's what makes 'up 50% then down 50%' not return to the start.