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Percentage Calculator

Percentage Calculator: Percent, Increase and Discount

To find a percentage of a number, divide the percentage by 100 and multiply by the number: 15% of 200 is 15 ÷ 100 × 200 = 30.

Uses only the figures you enter.

Percentage Calculator

Worked out on this device. Nothing you type is sent to us unless you email the results.

Percentage calculator: the formulas

How it's worked out

Free percentage calculator. Find a percentage of a number, what percent one number is of another, a percentage increase or decrease, or add and subtract a percentage for discounts. Every answer shows its formula.

A percentage is a number out of 100. The six calculations above use these formulas:

X% of Y = X ÷ 100 × Y

X is what % of Y = X ÷ Y × 100

% change = (Y − X) ÷ X × 100

Add X% to Y = Y × (1 + X ÷ 100)

Subtract X% from Y = Y × (1 − X ÷ 100)

X% of Y% = X ÷ 100 × Y

Percentages in business

Discounts, price rises and profit all come down to percentages, but the base matters. A mark-up is a percentage of cost and a margin is a percentage of the selling price, so the same price gives different figures: use the markup calculator or the gross margin calculator for pricing. For adding or removing VAT, use the VAT calculator, which handles prices that already include VAT.

Percentage Calculator FAQ

Common questions about calculating percentages, increases and discounts

Next step

Pricing a product? A mark-up and a margin are different percentages.

Important Disclaimer

Accounter does not provide accounting, tax, business or legal advice. This calculator has been provided for information purposes only. You should consult your own professional advisors for advice directly relating to your business.