Percentage calculator

Percent of, percent change, increase and decrease.

What is%of?

30

20 ÷ 100 × 150 = 30

is what percent of?

20%

30 ÷ 150 × 100 = 20%

Percentage change fromto

+25%increase

(150 − 120) ÷ 120 × 100 = 25%

Percentage difference betweenand

22.222222%

|120 − 150| ÷ ((120 + 150) ÷ 2) × 100 = 30 ÷ 135 × 100 = 22.222222%

increased by%

180

150 × (1 + 20 ÷ 100) = 180

decreased by%

120

150 × (1 − 20 ÷ 100) = 120

is%of what?

150

30 ÷ 20 × 100 = 150

How to use the percentage calculator

  1. Find the sentence that matches your question.
  2. Type your numbers into its boxes. Decimal commas (12,5), currency signs and thousands separators are fine. The answer updates as you type.
  3. Check the working under the answer to see exactly how it was calculated.

Percentage point vs. percent

When a rate goes from 10% to 12%, it rose by 2 percentage points, but by 20 percent, because 2 is 20% of 10. News about interest rates and polls often mixes the two up, so check which one is meant.

Everyday examples

  • Tips: 15% of a 64.00 bill is 9.60.
  • Discounts: 35% off 80.00 leaves 52.00 to pay.
  • Pay rises: a salary going from 42,000 to 45,000 is a 7.14% increase.
  • Test scores: 34 out of 40 is 85%.