Quickly work out percentages: how much a percent of a value is, what percent one number is of another, or a percentage increase or decrease.
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20% × 150 = 30
20% × 150 = 30Standard mathematical formulas. Instant in-browser calculation, no account, no data sent. Results are exact for the values you enter.
A percent (%) is a fraction of 100. To find X% of a value Y, divide the percentage by 100 and multiply by the value:
For example, 20% of 150 = (20 ÷ 100) × 150 = 30. Conversely, 30 of 150 = (30 ÷ 150) × 100 = 20%.
Divide the percentage by 100 and multiply by the number. For example, 20% of 150 = (20 ÷ 100) × 150 = 30.
Divide the partial number by the total and multiply by 100. For example, 30 of 150 = (30 ÷ 150) × 100 = 20%.
Multiply the value by (1 + percent/100). A 20% increase of 150 = 150 × 1.20 = 180.
Multiply the value by (1 − percent/100). A 20% discount on 150 = 150 × 0.80 = 120.
Divide the difference by the initial value and multiply by 100: (final − initial) ÷ initial × 100. From 150 to 180 = +20%.
If a rate rises from 5% to 7%, that is a 2 percentage-point increase, but a 40% relative increase (2 ÷ 5).
Divide the price by (1 + rate/100) for the net price. For 21% VAT: net = price ÷ 1.21, and VAT = price − price ÷ 1.21. At 121: net = 100, VAT = 21.
Multiply the price by (1 + percent/100). To add 21% to 100: 100 × 1.21 = 121. Use the “Increase by X%” mode.
Use the percentage change: (new − old) ÷ old × 100. From 80 to 100 is a +25% increase.
Multiply the amount by each percentage divided by 100. Of 1,000: 30% = 300 and 70% = 700 (the percentages should add up to 100%).