How to Calculate a Percentage
Percentage = part / whole x 100. 240 out of 800 = 240/800 x 100 = 30%. To find a percent of a number: value x percent/100, so 30% of 800 = 240.
Open the interactive Everyday Lifestyle tool →Key facts
| What percent | part / whole x 100 |
|---|---|
| Percent of a number | value x percent / 100 |
| 240 of 800 | 30% |
| 30% of 800 | 240 |
| Percent change | (new - old) / old x 100 |
Frequently asked questions
What is X percent of a number?
Multiply the number by the percent divided by 100. 30% of 800 = 800 x 0.30 = 240.
How do I find what percentage one number is of another?
Divide the part by the whole and multiply by 100. 240 of 800 is 240/800 x 100 = 30%.
How do I calculate percentage increase?
(new - old) / old x 100. From 800 to 1040 is (1040-800)/800 x 100 = 30% increase.
Related pages
Percentage Calculator is part of Everyday Lifestyle on GOAT Lab — a free reference you can use without signing up, and it works offline. Open the tool above for any custom value.
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