Percent Increase/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 decrease?

Back

Percent decrease = ((Original Amount - New Amount) / Original Amount) x 100.

Front

How do you calculate percent increase?

Back

Percent increase = ((New Amount - Original Amount) / Original Amount) x 100.

Front

If a shirt's price increases from $20 to $25, what is the percent increase?

Back

Percent increase = ((25 - 20) / 20) x 100 = 25%.

Front

If a shirt's price decreases from $20 to $15, what is the percent decrease?

Back

Percent decrease = ((20 - 15) / 20) x 100 = 25%.

Front

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

Back

New Amount = Original Amount - (Original Amount x Percent Decrease).

Front

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

Back

New Amount = Original Amount + (Original Amount x Percent Increase).

Front

If the original number of houses was 980 and decreased to 637, what is the percent decrease?

Back

Percent decrease = ((980 - 637) / 980) x 100 = 35%.

Front

If the original number of speeding tickets was 72 and decreased to 36, what is the percent decrease?

Back

Percent decrease = ((72 - 36) / 72) x 100 = 50%.