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

Find the percent of change from 50 to 75.

Back

50% increase.

Front

Find the percent of change from 200 to 150.

Back

25% decrease.

Front

If a shirt costs $40 and is marked down by 20%, what is the new price?

Back

$32.

Front

If a population of 300 increases by 10%, what is the new population?

Back

330.

Front

What is the formula for calculating percent change?

Back

Percent Change = ((New Value - Old Value) / Old Value) x 100.

Front

If a student scores 80 points and improves by 15%, what is the new score?

Back

92 points.