Calculators & converters

Percentage Calculator

Four quick percentage calculators: a percentage of a number, what percent, percentage change, and adding or removing a percentage.

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What is X% of Y?

What is % of ?

X is what percent of Y?

is what % of ?

Percentage change

From to

Increase or decrease by a percentage

± %

Increased
Decreased
Difference

How to use the Percentage Calculator

1
Pick the calculator that matches your question.
2
Type the numbers; the answer appears straight away.
3
Use "increase / decrease" for discounts, tax and price changes.

Frequently asked questions

How do I calculate a percentage of a number?

Multiply the number by the percentage and divide by 100. 15% of 200 = 200 × 15 / 100 = 30.

How is percentage change calculated?

(new − old) ÷ old × 100. From 80 to 100 is (100 − 80) ÷ 80 × 100 = 25% more.

How do I add VAT or a discount?

Use the last calculator: 250 increased by 18% = 295; decreased by 10% = 225.

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