Percents & Percent of Change

Front

What is a percent?

Back

A percent is a ratio expressed as a fraction of 100. It represents a part of a whole.

Front

How do you calculate a percent of a number?

Back

To calculate a percent of a number, multiply the number by the percent (in decimal form). For example, to find 25% of 200, calculate 200 x 0.25 = 50.

Front

What is the formula for percent of change?

Back

Percent of change = (New Value - Old Value) / Old Value x 100%.

Front

Find 250% of 25.

Back

62.5

Front

If 9 is 45% of what number, how do you find that number?

Back

To find the number, divide 9 by 0.45. So, 9 / 0.45 = 20.

Front

What is the percent of change from $52 to $125?

Back

The percent of change is 140%.

Front

What percent of 60 is 12?

Back

12 is 20% of 60.

Front

If a bakery sold 50 loaves of bread and 70% were sold in the afternoon, how many loaves were sold in the afternoon?

Back

35 loaves were sold in the afternoon.

Front

What does it mean if a price increases by 20%?

Back

It means the new price is 120% of the original price.

Front

How do you convert a fraction to a percent?

Back

To convert a fraction to a percent, divide the numerator by the denominator and multiply by 100.