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Everyday maths & percentages

Percentage change calculator

Compare two values or apply a percentage change to an original value. For two percentages, also see the difference in percentage points.

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01

Your inputs

The starting values are an example.

Decimals: 12.5 · Thousands: 1,234.56. Follow the field instructions for lists.

02

Your result

Enter your values and select Calculate.

Your calculation will appear here.

Your result will include the relevant values and units.

Understand the calculation

Formula and example

How it is calculated

Change = (new − original) / original × 100; percentage points = new percentage − original percentage

Worked example

An increase from 80 to 100 is +25%. A change from 20% to 25% is +5 percentage points and a relative increase of 25%.

Things to check

  • The original value must be positive for relative change. Percentage points are meaningful when comparing two percentage rates.