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 the new amount after a percent increase?

Back

New Amount = Original Amount + (Original Amount × Percent Increase) / 100.

Front

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

Back

New Amount = Original Amount - (Original Amount × Percent Decrease) / 100.

Front

What is the formula to find percent change?

Back

Percent Change = ((New Amount - Original Amount) / Original Amount) × 100.

Front

If a quantity increases from 50 to 75, what is the percent increase?

Back

Percent Increase = ((75 - 50) / 50) × 100 = 50%.

Front

If a quantity decreases from 200 to 150, what is the percent decrease?

Back

Percent Decrease = ((200 - 150) / 200) × 100 = 25%.

Front

What is the new amount if you have 100 and it increases by 20%?

Back

New Amount = 100 + (100 × 20) / 100 = 120.

Front

What is the new amount if you have 80 and it decreases by 25%?

Back

New Amount = 80 - (80 × 25) / 100 = 60.

Front

If a store has 40 items and sells 10, what is the percent decrease in items?

Back

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