Percent of Change Word Problems

Front

What is the formula to calculate percent change?

Back

Percent Change = ((New Value - Old Value) / Old Value) * 100

Front

How do you determine percent increase?

Back

Percent Increase = ((New Value - Old Value) / Old Value) * 100, where New Value is greater than Old Value.

Front

How do you determine percent decrease?

Back

Percent Decrease = ((Old Value - New Value) / Old Value) * 100, where Old Value is greater than New Value.

Front

If a value decreases from 500 to 400, what is the percent decrease?

Back

Percent Decrease = ((500 - 400) / 500) * 100 = 20%.

Front

If a value increases from 150 to 180, what is the percent increase?

Back

Percent Increase = ((180 - 150) / 150) * 100 = 20%.

Front

What does a percent change of 0% indicate?

Back

A percent change of 0% indicates that there has been no change between the old value and the new value.

Front

What is the significance of a negative percent change?

Back

A negative percent change indicates a decrease in value.

Front

How can you express a percent change as a decimal?

Back

To express a percent change as a decimal, divide the percent by 100.

Front

What is the percent change if a population increases from 1,000 to 1,200?

Back

Percent Change = ((1200 - 1000) / 1000) * 100 = 20%.

Front

What is the percent change if a product price decreases from $50 to $30?

Back

Percent Change = ((50 - 30) / 50) * 100 = 40%.