Find
Calculate what percentage one number is of another
Increase
Calculate the new value after increasing a number by a percentage
Decrease
Calculate the new value after decreasing a number by a percentage
Difference
Calculate the percentage change between two values
Find Percentage Calculator
Calculate what percentage one number is of another. Enter any two numbers to instantly find the percentage.
Formula
Result = (X / 100) × YResult
Enter a value and percentage to see the result.
How to find a percentage of a number
Two numbers in, one answer out, with the formula shown so you can check it.
- 01
Enter the percentage
Type the rate as a plain number, so 15 for 15%. Decimals such as 7.25 work too.
- 02
Enter the number you want a share of
This is the whole: total marks, the sale price, a bill. The tool multiplies the two and divides by 100, so 15% of 250 gives 37.5.
Percentages that are easy fractions
Many everyday percentages are simple fractions in disguise, and spotting them lets you check the answer in your head. The last column shows each one applied to ₹2,400.
| Percentage | Fraction | Of ₹2,400 |
|---|---|---|
| 1% | 1/100 | ₹24 |
| 5% | 1/20 | ₹120 |
| 10% | 1/10 | ₹240 |
| 12.5% | 1/8 | ₹300 |
| 20% | 1/5 | ₹480 |
| 25% | 1/4 | ₹600 |
| 33.33% | 1/3 | ₹800 |
| 50% | 1/2 | ₹1,200 |
| 75% | 3/4 | ₹1,800 |
For anything else, start from 10% and build up. 15% of 80 is 10% (8) plus 5% (4), so 12. And there's a swap trick that's always true: X% of Y equals Y% of X. 8% of 50 is hard; 50% of 8 is obviously 4, and it's the same answer.
Which question are you asking?
Three questions look alike and need different maths. "What is 20% of 150?" is this page: (20 × 150) ÷ 100 = 30. "What percent is 45 of 60?" divides instead: 45 ÷ 60 × 100 = 75%. "20% of what number is 30?" works backwards: 30 ÷ 0.20 = 150.
This calculator only answers the first. For the second, divide part by whole on any calculator, or use the Percentage Change page if you're comparing an old and a new value. Mixing these up is the usual reason a result looks wildly off.
When you need X% of something
Turning a percentage into marks
If a course needs 85% of 600 marks to get a distinction, that's 510 marks. Knowing the raw number makes it easier to plan for the remaining papers.
Working out a commission
A 3.5% brokerage on a ₹45,00,000 property sale is ₹1,57,500 before GST. Agents and buyers can check the invoice against this.
Reading nutrition labels
A label saying a serving gives 20% of a 2,000-calorie day means 400 calories. The same works for sodium, fibre and other daily values.