Math calculator

Percentage Change Calculator

Compare two values and see the absolute change, percentage change and change multiple.

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No account. Formula and assumptions are shown below.

Calculator inputs

Percentage change details

Formula & disclaimer

Percentage Change = ((New Value βˆ’ Original Value) Γ· Original Value) Γ— 100

View assumptions
Formula reviewCalcs at Hand Editorial TeamVerified 28 August 2026 Β· automated checks included

How to read this result

Three useful checks, kept deliberately short.

What this result includes

The value increased by 25%, or 1.25 times the original value.

A practical example

A value increases from 120 to 150: Find the difference: 150 βˆ’ 120 = 30 Β· Divide by the original value: 30 Γ· 120 Β· Convert to a percentage: 25%.

Common input mistake

A negative result indicates a decrease; a positive result indicates an increase.

Formula and assumptions

Percentage Change = ((New Value βˆ’ Original Value) Γ· Original Value) Γ— 100

Percentage change always uses the original value as its comparison base.

Keep in mind: Check that both values use the same unit and represent comparable periods.

Produced byCalcs at Hand Editorial Team
Last formula check28 August 2026
Review methodKnown examples + boundary cases
Editorial and correction policy β†’