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Percentage Change Calculator

Find the percentage change between two values.

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Formula
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Formulas

% Change = ((New - Old) / |Old|) × 100

Positive = increase. Negative = decrease.

Percentage Change

A 50% increase from 100 = 150. A 50% decrease from 150 = 75 (not back to 100!). This asymmetry is why percentage changes can be misleading.