Understanding Percent Change

What is the first step in calculating percent change?

• Divide the new value by the old value

• Find the difference between the two values

• Multiply the original value by 100

• Add a percent sign to the original value

If the number of students increased from 425 to 503, what is the percent increase?

• 15.6%

• 20%

• 22.5%

• 18.4%

What is the original number of students used to calculate the percent increase?

• 425

• 450

• 503

• 400

If the price of gas decreased from $2.97 to $2.85, what is the percent decrease?

• 3%

• 4%

• 5%

• 6%

What is the final step in converting a decimal to a percentage?

• Add the original value

• Multiply by 100 and add a percent sign

• Subtract the original value

• Divide by 100