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how do i calculate percentages

To find what percent of number y is number x, you should divide number x by number y. Then multiply your result by 100 and this will give you the percentage. Your formula should look like x/y * 100.

To find what number of x is a total of some percentage, you should divide the known percentage by 100 and multiply your result by number x. Your formula should look like y%/100 * x.

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Math Goodies

1 Additional Answer

### Determine your variables

Determine which numbers are your part and your whole. Your whole number is the number that equals 100 percent. The part is the number that you're trying to find how many percents of the whole number it takes up.

### Divide the part into the whole

Divide the part number variable into the whole number variable to obtain a decimal.

### Multiply by 100

Multiply your decimal by 100 to convert the decimal into a percentage. Add a percent sign.

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