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Math calculator

Percentage Decrease Calculator

Measure the percentage decrease between an original value and a new value.

Enter your values

Results are calculated in your browser.

How this calculation works

((original value − new value) ÷ |original value|) × 100 Use the calculator above to enter your values. Inputs are checked before a result is shown, and calculations run locally in your browser.

Example: 100 to 75 is a 25% decrease Results are rounded for display where needed.

Related math guides

How to Calculate a Percentage →How to Calculate Percentage Increase →

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Related math calculators

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Percentage CalculatorFind a percentage of a number, or work out what percentage one value is of another.Percentage Increase CalculatorMeasure the percentage increase from an original value to a new value.Percentage Difference CalculatorCompare two values as a percentage of their average magnitude.