Percent Increase and Percent Decrease

Front

What is percent increase?

Back

Percent increase is the amount that a value has grown, expressed as a percentage of the original value. It is calculated using the formula: ((New Value - Original Value) / Original Value) x 100.

Front

What is percent decrease?

Back

Percent decrease is the amount that a value has decreased, expressed as a percentage of the original value. It is calculated using the formula: ((Original Value - New Value) / Original Value) x 100.

Front

How do you calculate a 20% tip on a $20 meal?

Back

To calculate a 20% tip on a $20 meal, multiply 20 by 0.20: 20 x 0.20 = $4.

Front

What is the formula to convert a decimal to a percent?

Back

To convert a decimal to a percent, multiply the decimal by 100 and add a percent sign. For example, 0.05 x 100 = 5%.

Front

How do you calculate sales tax?

Back

To calculate sales tax, multiply the price of the item by the tax rate. For example, for a $899 TV with a 6.5% tax rate: 899 x 0.065 = $58.43.

Front

What is the new amount after a 10% increase on 710 points?

Back

To find the new amount after a 10% increase on 710 points, calculate: 710 + (710 x 0.10) = 781.

Front

How do you find the sale price after a discount?

Back

To find the sale price after a discount, subtract the discount amount from the original price. For example, for a $24.50 shirt with a 15% discount: 24.50 - (24.50 x 0.15) = $20.83.

Front

What does a 50% increase mean?

Back

A 50% increase means the original value is increased by half of its amount. For example, if the original value is 100, a 50% increase would result in 100 + (100 x 0.50) = 150.

Front

What does a 5% decrease mean?

Back

A 5% decrease means the original value is reduced by 5% of its amount. For example, if the original value is 200, a 5% decrease would result in 200 - (200 x 0.05) = 190.

Front

How do you express 0.5 as a percent?

Back

To express 0.5 as a percent, multiply by 100: 0.5 x 100 = 50%.