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 Value - Original Value) / Original Value) 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 Value - New Value) / Original Value) 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 shirt costs $40 and is on sale for $30, what is the percent decrease?

Back

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

Front

If a student has 10 friends and gains 2 more, what is the percent increase in friends?

Back

Percent Increase = ((12 - 10) / 10) x 100 = 20%.

Front

What is the formula for calculating percent change?

Back

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

Front

If a bike's price increases from $200 to $250, what is the percent increase?

Back

Percent Increase = ((250 - 200) / 200) x 100 = 25%.

Front

If a book has 300 pages and loses 30 pages, what is the percent decrease in pages?

Back

Percent Decrease = ((300 - 270) / 300) x 100 = 10%.

Front

What does it mean if a price is marked down by 15%?

Back

It means the new price is 85% of the original price. The discount is calculated as 15% of the original price.