Percentages

Front

What is a percentage?

Back

A percentage is a way of expressing a number as a fraction of 100. It represents how much of a whole is being considered.

Front

How do you calculate a percentage of a number?

Back

To calculate a percentage of a number, multiply the number by the percentage (in decimal form). For example, to find 20% of 50, calculate 50 * 0.20 = 10.

Front

What is 50% of a number?

Back

50% of a number is half of that number. For example, 50% of 86 is 43.

Front

What is 25% of a number?

Back

25% of a number is one quarter of that number. For example, 25% of 132 is 33.

Front

What is 20% of a number?

Back

20% of a number is one fifth of that number. For example, 20% of 70 is 14.

Front

What is 75% of a number?

Back

75% of a number is three quarters of that number. For example, 75% of 44 is 33.

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide the percentage by 100. For example, 25% as a decimal is 0.25.

Front

What is the formula for calculating percentage increase?

Back

The formula for calculating percentage increase is: ((New Value - Old Value) / Old Value) * 100.

Front

What is the formula for calculating percentage decrease?

Back

The formula for calculating percentage decrease is: ((Old Value - New Value) / Old Value) * 100.

Front

How do you find the whole from a percentage?

Back

To find the whole from a percentage, divide the part by the percentage (in decimal form). For example, if 33 is 25% of a number, the whole is 33 / 0.25 = 132.