Percentage Change Calculator

Use our free percentage change calculator to quickly find the percent change between two values. Shows whether it's an increase or decrease.

Math

Original Value

New Value

Formula

Percentage change measures the relative change between an original value and a new value. A positive result indicates an increase; a negative result indicates a decrease.

Change = (New − Old) / |Old| × 100%

Percentage: The percentage value you want to apply

Number: The original number or value

Result: The calculated result

How It Works

1Enter the original (old) value.
2Enter the new value.
3Click Calculate to find the percentage change.
4The result shows the percent change with a sign (+ for increase, − for decrease).

Examples

Change from 100 to 150

1.Enter 100 as the original value.
2.Enter 150 as the new value.
3.Difference: 150 − 100 = 50.
4.Percentage change: (50 / 100) × 100 = +50%.

Result: +50%

Frequently Asked Questions

A negative percentage change means the value decreased. For example, a change from 200 to 150 is a -25% change.

If the original value is zero, the percentage change is undefined because you cannot divide by zero.

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Percentage Change: Formula and Examples

CalculateMe Team

Last updated: 2026-07-13

Percentage Change Calculator

Formula

How It Works

Examples

Change from 100 to 150

Frequently Asked Questions

What does a negative percentage change mean?

What if the original value is zero?

Related Calculators

Related Articles

Percentage Change Calculator

Formula

How It Works

Examples

Change from 100 to 150

Frequently Asked Questions

What does a negative percentage change mean?

What if the original value is zero?

Related Calculators

Related Articles