Percentage Calculator — Find a Percent in a Second

Need the percent for a discount, marks, or a price rise or fall? All three ways are in one place — no signup, everything in your browser.

What do you want to find? Percent (X) Number (Y)

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How to Use

Choose the method — "X% of Y" for a discount, "what % is it" for marks, "Increase/Decrease" for a price change.
Enter both numbers and press Calculate.
The full working will also show below the answer, so a mistake can be spotted.

Frequently Asked Questions

How do I work out a discount? (for example 20% off 1000)

In "X% of Y", enter 20 and 1000 — the answer is 200 (the discount). Final price = 1000 − 200 = 800.

How do I work out a marks percentage? (for example 380 out of 450)

In "What % is X of Y", enter 380 and 450 — the answer is 84.44%.

What is the difference between increase and decrease?

If the new number is bigger than the old one, it shows an increase (+); if it is smaller, a decrease (−). For example, 200 to 250 = +25%, and 250 to 200 = −20%.