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Percentage Calculator

Calculate what percentage one number is of another. Quick percentage math for reports and analysis.

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Quick feedback helps us fix issues and improve Percentage Calculator.

Finding a value's share of a total

The calculator divides Value by Total and multiplies by 100. Results are displayed to two decimal places.

Output behavior and limits

Total must be nonzero. This operation is not percentage change: entering an old and new price does not calculate their increase.

Value 25 and Total 200 give 12.50%. For percentage change, first calculate the difference and use the original amount as Total.

Before replacing your original

  • Processing runs locally in this browser; keep a copy of the source input.

Processing details

Runs in your browser. File handling policy

Implementation and guidance reviewed .

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