Percent Increase and Decrease

Front

What is percent increase?

Back

Percent increase is the amount of increase expressed as a percentage of the original amount. It is calculated using the formula: ((New Amount - Original Amount) / Original Amount) x 100.

Front

What is percent decrease?

Back

Percent decrease is the amount of decrease expressed as a percentage of the original amount. It is calculated using the formula: ((Original Amount - New Amount) / Original Amount) x 100.

Front

How do you calculate the new amount after a percent increase?

Back

To calculate the new amount after a percent increase, use the formula: New Amount = Original Amount + (Original Amount x Percent Increase).

Front

How do you calculate the new amount after a percent decrease?

Back

To calculate the new amount after a percent decrease, use the formula: New Amount = Original Amount - (Original Amount x Percent Decrease).

Front

What is the formula to find percent of change?

Back

The formula to find percent of change is: Percent of Change = ((New Value - Original Value) / Original Value) x 100.

Front

If a quantity decreases from 100 to 75, what is the percent decrease?

Back

Percent Decrease = ((100 - 75) / 100) x 100 = 25%.

Front

If a quantity increases from 50 to 65, what is the percent increase?

Back

Percent Increase = ((65 - 50) / 50) x 100 = 30%.

Front

What does a 100% increase mean?

Back

A 100% increase means the new amount is double the original amount.

Front

What does a 50% decrease mean?

Back

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

Front

How do you find the original amount if you know the new amount and the percent change?

Back

To find the original amount, rearrange the percent change formula: Original Amount = New Amount / (1 + Percent Change) for increase, or Original Amount = New Amount / (1 - Percent Change) for decrease.