Percentage calculator

Percent of a number, percent change, or reverse a percentage — instantly.

Did you know?

Percentage change and percentage difference are not the same thing. Change compares a new value to an original baseline (directional), while difference compares two values without favoring either one.

Mode

Percentage

Of value

20% of 150

The three percentage formulas

Percent of a number: (percentage × value) ÷ 100. Example: 20% of 150 = 30.
Percent change: ((new − original) ÷ original) × 100. Example: 80 to 100 is a 25% increase.
Reverse percentage: finds the original value before a percentage was applied. Example: if 80 is the price after a 20% discount, the original price was 100.

FAQ

How do I calculate percentage of a number?

Multiply the number by the percentage and divide by 100. For example, 20% of 150 is (20 × 150) ÷ 100 = 30.

How do I calculate percentage change?

Subtract the original value from the new value, divide by the original value, then multiply by 100. A positive result is an increase, a negative result is a decrease.

What is the difference between percentage change and percentage difference?

Percentage change compares a new value to an original value (directional). Percentage difference compares two values without treating either as the baseline.

Percentage calculator

The three percentage formulas

FAQ

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