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Percentage Calculator

Work out a percentage of a number, find what percent one number is of another, or calculate percent increase and decrease. Pick a mode and type your numbers.

How to use the percentage calculator

Choose the question you want answered.
Enter the two numbers.
Read the result and check the graph.

Percentage formulas

X% of Y = X ÷ 100 × YPercent = part ÷ total × 100Percent change = (new − old) ÷ old × 100

Percentage examples

Percent of: 15% of 200 = 15 ÷ 100 × 200 = 30.

What percent: 30 is 15% of 200, because 30 ÷ 200 × 100 = 15.

Percent change: a price rising from 80 to 100 is (100 − 80) ÷ 80 × 100 = 25% increase.

Percentage questions

How do I calculate a discount percentage?

Use the percent change mode with the original price as X and the sale price as Y. A negative result is the discount.

What is the difference between percent and percentage points?

Going from 10% to 12% is a rise of 2 percentage points, but a 20% increase.

Related searches: percent increase calculator, percent decrease calculator, discount calculator, percentage difference, how to find a percentage of a number.