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Percent change worksheet

Grade 7 math, Common Core 7.RP.A.3. 10 problems with an answer key and worked steps. Free to print, and you can make new problems any time.

By the StudyWiz teamUpdated October 23, 2026How we write our pages

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Percent change

Grade 7 math, Common Core 7.RP.A.3

Find each percent increase or decrease.

  1. 1.
    A store’s daily customers went from 80 to 132. What is the percent increase?
  2. 2.
    A plant’s height went from 80 cm to 108 cm. What is the percent increase?
  3. 3.
    A team’s season points went from 20 to 8. What is the percent decrease?
  4. 4.
    A plant’s height went from 80 cm to 28 cm. What is the percent decrease?
  5. 5.
    A plant’s height went from 500 cm to 150 cm. What is the percent decrease?
  6. 6.
    The price of a ticket went from $200 to $300. What is the percent increase?
  7. 7.
    A store’s daily customers went from 80 to 140. What is the percent increase?
  8. 8.
    A store’s daily customers went from 200 to 100. What is the percent decrease?
  9. 9.
    The price of a ticket went from $40 to $18. What is the percent decrease?
  10. 10.
    The price of a ticket went from $160 to $40. What is the percent decrease?
Free worksheets for grades 6 to 8 from StudyWiz, with answer keys: studywiz.online/worksheets

Answer key: Percent change

Grade 7 math. Each answer has a few worked steps, to help check the method as well as the answer.

  1. 1. 65% increase

    Change: 5252 ÷ 80 = 0.65 = 65%

  2. 2. 35% increase

    Change: 2828 ÷ 80 = 0.35 = 35%

  3. 3. 60% decrease

    Change: 1212 ÷ 20 = 0.6 = 60%

  4. 4. 65% decrease

    Change: 5252 ÷ 80 = 0.65 = 65%

  5. 5. 70% decrease

    Change: 350350 ÷ 500 = 0.7 = 70%

  6. 6. 50% increase

    Change: $100100 ÷ 200 = 0.5 = 50%

  7. 7. 75% increase

    Change: 6060 ÷ 80 = 0.75 = 75%

  8. 8. 50% decrease

    Change: 100100 ÷ 200 = 0.5 = 50%

  9. 9. 55% decrease

    Change: $2222 ÷ 40 = 0.55 = 55%

  10. 10. 75% decrease

    Change: $120120 ÷ 160 = 0.75 = 75%

The answer key prints on its own page. You’re welcome to print and copy these worksheets for your own kids or class.

About percent change

Percent change tells you how big a change is compared with where you started. Find the amount of change, divide it by the original amount, and write the result as a percent. If the amount went up it is a percent increase; if it went down it is a percent decrease.

Worked example 1

A plant’s height went from 160 cm to 144 cm. What is the percent decrease?
  1. Step 1.Change: 16
  2. Step 2.16 ÷ 160 = 0.1 = 10%

Answer: 10% decrease

Worked example 2

The price of a ticket went from $80 to $116. What is the percent increase?
  1. Step 1.Change: $36
  2. Step 2.36 ÷ 80 = 0.45 = 45%

Answer: 45% increase

Worked example 3

A team’s season points went from 200 to 220. What is the percent increase?
  1. Step 1.Change: 20
  2. Step 2.20 ÷ 200 = 0.1 = 10%

Answer: 10% increase

Watch out for

  • Always divide by the original (starting) amount, not the new one.
  • The change is new minus old. Say whether it is an increase or a decrease.
  • A 100% increase means the amount doubled.

Practice percent change online

On StudyWiz, your kid can practice percent change with 5-question quizzes that are checked as they go, with an explanation for every answer. When a homework problem is the trouble, Wiz gives a hint for each step instead of the answer.

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