Percent Increase/Decrease (5.1)

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 Percent Change?

Back

Percent Change can be calculated using the formula: ((New Value - Old Value) / Old Value) x 100.

Front

Find Percent Change: From 248 workers to 200 workers.

Back

19% decrease.

Front

Find the new amount after a 20% decrease from 160 elephants.

Back

128 elephants.

Front

Find Percent Change: From 42 acres to 72 acres.

Back

71% increase.

Front

Find Percent Change: From 24 people to 30 people.

Back

25% increase.

Front

Find Percent Change: From 95 trees to 145 trees.

Back

53% increase.

Front

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

Back

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

Front

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

Back

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