Percentage Change Calculator

Calculate the percentage change between two values. See absolute change and percentage increase or decrease.

Original Value

New Value

Tab to move between fields

Percentage Change

20%

Change20

Absolute Change20

Absolute % Change20%

How to Use This Calculator

Enter the Old Value (starting point) and the New Value (ending point).
The formula is: % change = ((New − Old) / |Old|) × 100.
A positive result means an increase; a negative result means a decrease.
Absolute Change shows the raw numerical difference (New − Old) alongside the percentage.
If Old Value is 0, percentage change is mathematically undefined — the calculator will flag this.

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Formula

Percentage Change = ((New Value - Old Value) / Old Value) × 100

Calculate percentages easily — find a percentage of a number, percentage increase/decrease, and percentage change between two values.

Calculate mean, median, mode, range, geometric mean, and harmonic mean of a set of numbers.

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