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 the original price of an item is $50 and the new price is $75, what is the percent increase?

Back

50% increase.

Front

If the original number of students is 20 and it decreases to 15, what is the percent decrease?

Back

25% decrease.

Front

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

Back

New Value = Original Value x (1 + Percent Increase).

Front

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

Back

New Value = Original Value x (1 - Percent Decrease).

Front

If a shirt costs $40 and is on sale for $30, what is the percent decrease in price?

Back

25% decrease.

Front

If a population increases from 200 to 250, what is the percent increase?

Back

25% increase.