Examples for

# Percentages

A percentage is a number expressed as a fraction of 100, and the percent sign, %, is often used as standard notation. Wolfram|Alpha can take a percentage of a number or quantity and calculate percentage increase or decrease problems.

Take a percentage of a number or a quantity.

#### Find information about a percentage:

#### Convert a fraction to a percentage:

#### Calculate a percentage of a number:

#### Calculate a percentage of a quantity:

#### Convert a percentage to an equivalent fraction:

Increase or decrease numbers or quantities by a percentage.