# Percents

Percents are used for a large variety of areas: commerce, interest rates, and a variety of statistics in many fields. When a retailer sales products or services, percents are used for discounts to entice buyers. Percents are used in department stores, restaurants, banks, and so much more.

## What does percent mean?

Percent means “out of 100.” The symbol % is shorthand for writing a ratio that is based on the number 100. So, if a basketball player made 85 out of 100 free throws attempted, we would say that the player made 85 percent of all attempted free throws.

## Converting between Decimals and Percents

To change a decimal to a percent, you multiply the decimal by 100 and add the % sign.

To change a percent to a decimal, you divide the percent by a decimal and drop the % sign.

## Converting between Fractions and Percents

To change a fraction to a percent, change the fraction to a decimal by dividing the numerator by the denominator. Then change the decimal to a percent.

To change a percent to a fraction, put the percent over 100, drop the % sign, and simplify a fraction.

## Benchmark Percents

There is a certain percent that you should know what their decimal and fraction equivalents are. Knowing these benchmarks will help you solve a number of mathematical problems without computation.