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Percentage Calculator

Four kinds of percentage calculations in one place โ€” enter the numbers and get the answer instantly, no button to press.

1๏ธโƒฃ Percent of a number โ€” what is 15% of 500?
of
% = โ€”
2๏ธโƒฃ What percent โ€” 80 is what % of 400? (for exam marks)
is
of โ€”
3๏ธโƒฃ Percentage change โ€” from 50 to 75
to
= โ€”
4๏ธโƒฃ Add/subtract percent โ€” price after VAT or discount
% = โ€”

๐Ÿ”’ Calculations happen in your browser โ€” nothing leaves your device

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Easy formulas to remember for percentages

Y% of X = X ร— Y รท 100 ยท X is what % of Y = X รท Y ร— 100 ยท Percentage change = (New โˆ’ Old) รท Old ร— 100. From exam marks to store discounts, VAT to salary raises โ€” every everyday percentage calculation comes down to these four formulas.

Frequently asked questions

If I scored 323 out of 400 on an exam, what's the percentage?
Enter 323 and 400 in card 2 โ€” the answer is 80.75%. Work out the percentage for any exam score the same way.
What's the total after adding 15% VAT to a เงณ1,000 item?
In card 4, enter 1000, choose "+ Increase" and enter 15 โ€” the answer is เงณ1,150. Choose "โˆ’ Decrease" for a discount instead.
What does a negative change mean?
A negative (โˆ’) result in card 3 means the value decreased โ€” for example, going from 100 to 75 gives โˆ’25%, i.e. a 25% decrease.

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