Percents and Percent of Change

Front

What is a percent?

Back

A percent is a ratio expressed as a fraction of 100. It represents a part of a whole.

Front

How do you calculate the percent of change?

Back

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

Front

What does an increase in percent of change indicate?

Back

An increase in percent of change indicates that the new value is greater than the original value.

Front

What does a decrease in percent of change indicate?

Back

A decrease in percent of change indicates that the new value is less than the original value.

Front

If a quantity increases from 50 to 75, what is the percent of change?

Back

Percent of change = (75 - 50) / 50 x 100 = 50% increase.

Front

If a quantity decreases from 200 to 150, what is the percent of change?

Back

Percent of change = (150 - 200) / 200 x 100 = 25% decrease.

Front

What is the new amount if 80 is decreased by 20%?

Back

New amount = 80 - (20% of 80) = 80 - 16 = 64.

Front

What is the new amount if 150 is increased by 10%?

Back

New amount = 150 + (10% of 150) = 150 + 15 = 165.

Front

What is the percent of change from 60 to 90?

Back

Percent of change = (90 - 60) / 60 x 100 = 50% increase.

Front

What is the percent of change from 120 to 90?

Back

Percent of change = (90 - 120) / 120 x 100 = 25% decrease.