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

Back

Percent Decrease = ((40 - 30) / 40) x 100 = 25%.

Front

If a bike's price increases from $200 to $250, what is the percent increase?

Back

Percent Increase = ((250 - 200) / 200) x 100 = 25%.

Front

What does it mean to say something is 'percent off'?

Back

'Percent off' refers to the reduction in price expressed as a percentage of the original price.

Front

If a product originally costs $50 and is now $35, what percent off is it?

Back

Percent Off = ((50 - 35) / 50) x 100 = 30%.

Front

What is the formula for finding the original price after a discount?

Back

Original Price = Sale Price / (1 - Discount Rate).

Front

If a salary increases from $30,000 to $36,000, what is the percent increase?

Back

Percent Increase = ((36,000 - 30,000) / 30,000) x 100 = 20%.