How to use it
- Pick the line that matches your question.
- Type your numbers.
- The answer appears instantly.
About this tool
Percent of: multiply the number by the percent and divide by 100. 15% of 200 is 200 × 15 ÷ 100 = 30.
What percent: divide the part by the whole and multiply by 100. 30 out of 120 is 25%.
Percent change: subtract the old value from the new one, divide by the old value and multiply by 100. Going from 80 to 100 is a 25% increase.
Questions
How do I calculate a discount?
Use the first line. For 20% off 1500, enter 20 and 1500 to get 300 off, so you pay 1200.