Percent Change

Front

What is percent change?

Back

Percent change is a way to express a change in a quantity as a percentage of the original amount. It is calculated using the formula: ((new value - old value) / old value) * 100.

Front

How do you calculate an increase in percentage?

Back

To calculate an increase in percentage, use the formula: (increase/original value) * 100.

Front

How do you calculate a decrease in percentage?

Back

To calculate a decrease in percentage, use the formula: (decrease/original value) * 100.

Front

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

Back

The percent increase is 50%. Calculation: ((75 - 50) / 50) * 100 = 50%.

Front

If a quantity decreases from 80 to 60, what is the percent decrease?

Back

The percent decrease is 25%. Calculation: ((80 - 60) / 80) * 100 = 25%.

Front

What does it mean if y is 125% of x?

Back

It means that y is greater than x by 25%. This indicates an increase.

Front

What does it mean if y is 75% of x?

Back

It means that y is less than x by 25%. This indicates a decrease.

Front

A store increased the price of a shirt from $20 to $25. What is the percent increase?

Back

The percent increase is 25%. Calculation: ((25 - 20) / 20) * 100 = 25%.

Front

A car's value decreased from $15,000 to $12,000. What is the percent decrease?

Back

The percent decrease is 20%. Calculation: ((15,000 - 12,000) / 15,000) * 100 = 20%.

Front

If a student scored 80 out of 100 on a test, what percentage did they score?

Back

The student scored 80%. Calculation: (80/100) * 100 = 80%.