Percent Increase and Decrease

Front

What is percent increase?

Back

Percent increase is a measure of how much a quantity has grown compared to its original amount, expressed as a percentage.

Front

What is percent decrease?

Back

Percent decrease is a measure of how much a quantity has shrunk compared to its original amount, expressed as a percentage.

Front

How do you calculate percent increase?

Back

Percent increase = ((New Value - Original Value) / Original Value) x 100.

Front

How do you calculate percent decrease?

Back

Percent decrease = ((Original Value - New Value) / Original Value) x 100.

Front

If a price increases from $50 to $60, what is the percent increase?

Back

Percent increase = ((60 - 50) / 50) x 100 = 20%.

Front

If a population decreases from 200 to 150, what is the percent decrease?

Back

Percent decrease = ((200 - 150) / 200) x 100 = 25%.

Front

What does a percent increase indicate about a quantity?

Back

A percent increase indicates that the quantity has grown larger than its original value.

Front

What does a percent decrease indicate about a quantity?

Back

A percent decrease indicates that the quantity has become smaller than its original value.

Front

If a student scored 80 on a test and then scored 90 on the next test, what is the percent increase in their score?

Back

Percent increase = ((90 - 80) / 80) x 100 = 12.5%.

Front

If a store had 100 items and sold 30, what is the percent decrease in items?

Back

Percent decrease = ((100 - 70) / 100) x 100 = 30%.