SCHOOL PLANNING AND CORE MATH

Percentage Increase Calculator

Calculate the percentage increase from an original value to a larger new value.

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Change any assumption, then calculate your estimate.

Free to use

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Your result

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Enter your values and select Calculate. Your result stays on this device.

How it works

Percentage increase = (new value − original value) ÷ original value × 100.

Assumptions

The original value must be greater than zero.

Use case

percentage increase calculator: a clear planning check

Calculate the percentage increase from an original value to a larger new value. The stated formula, assumptions, and result limits remain visible so the calculation can be checked in context.

Use a clear percentage increase calculator scenario with values you can verify before relying on the result.

Method and update

Last reviewed: 2026-08-08. This tool performs the stated formula locally in your browser using the values you enter.

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