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

If a company has 52 employees and increases by 25%, how many employees will it have?

Back

65 employees (52 + (52 x 0.25) = 65).

Front

What is the formula to find percent change?

Back

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

Front

If Mrs. Mroc's class goes from 35 to 42 students, what is the percent change?

Back

20% increase (Percent Change = ((42 - 35) / 35) x 100 = 20%).

Front

What is the regular price of an item if it is on sale for $52.40 and the percent decrease is 20%?

Back

$65.50 (Regular Price = Sale Price / (1 - Percent Decrease) = 52.40 / 0.8).

Front

If attendance at a festival increased from 2,376 to 2,950, what is the percent increase?

Back

24% increase (Percent Change = ((2,950 - 2,376) / 2,376) x 100 = 24%).

Front

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

Back

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