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 $80 to $60, what is the percent decrease?

Back

Percent Decrease = ((80 - 60) / 80) x 100 = 25%.

Front

What is the formula for finding the new value after a percent increase?

Back

New Value = Original Value + (Original Value x Percent Increase).

Front

What is the formula for finding the new value after a percent decrease?

Back

New Value = Original Value - (Original Value x Percent Decrease).

Front

If a student scores 70 on a test and then scores 85 on the next test, what is the percent increase in their score?

Back

Percent Increase = ((85 - 70) / 70) x 100 = 21.43%.

Front

If a store has 200 items and sells 50, what is the percent decrease in items?

Back

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