Percent of Change

Front

What is Percent of Change?

Back

Percent of Change is a way to express how much a quantity has increased or decreased in relation to its original value, calculated as (New Value - Original Value) / Original Value x 100%.

Front

How do you calculate a percent decrease?

Back

To calculate a percent decrease, subtract the new value from the original value, divide by the original value, and multiply by 100%. Formula: Percent Decrease = ((Original - New) / Original) x 100%.

Front

How do you calculate a percent increase?

Back

To calculate a percent increase, subtract the original value from the new value, divide by the original value, and multiply by 100%. Formula: Percent Increase = ((New - Original) / Original) x 100%.

Front

Find the percent of change from 20 miles to 11 miles.

Back

45% decrease.

Front

Find the percent of change from 35 to 70.

Back

100% increase.

Front

What is the percent decrease when a TV set's price drops from $500 to $413?

Back

17.4% decrease.

Front

Find the percent of change from $30 to $110.

Back

267% increase.

Front

Mary lost 30 pounds from her original weight of 180 pounds. What is the percent of change?

Back

17% decrease.

Front

What does a 100% increase mean?

Back

A 100% increase means the new value is double the original value.

Front

What does a 45% decrease mean?

Back

A 45% decrease means the new value is 55% of the original value.