Percent Increase and Decrease

Front

What is percent increase?

Back

Percent increase is a measure of how much a quantity has grown relative 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 relative 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 goes from $50 to $75, what is the percent increase?

Back

Percent Increase = ((75 - 50) / 50) x 100 = 50%.

Front

If a price goes from $200 to $150, what is the percent decrease?

Back

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

Front

What does a percent increase of 100% mean?

Back

A percent increase of 100% means the new value is double the original value.

Front

What does a percent decrease of 50% mean?

Back

A percent decrease of 50% means the new value is half of the original value.

Front

If a student scores 80 out of 100 on a test and then scores 90 out of 100 on the next test, what is the percent increase in score?

Back

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

Front

If a car's value decreases from $20,000 to $15,000, what is the percent decrease?

Back

Percent Decrease = ((20,000 - 15,000) / 20,000) x 100 = 25%.