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➕ Arithmetic

Percent Increase / Decrease

Change relative to original

Formula

% = ((new−old)/old) × 100

Change relative to original

Example

  • Old = 50
  • New = 60
  • % = (10/50)×100 = 20%
Result 20% increase
More Arithmetic

Grade 8 · Percent Increase / Decrease

Easy 20 questions Worksheet #70087 For Percent Increase / Decrease

Answer Sheet Generate New

MathDigits Worksheet

Grade 8 · Percent Increase / Decrease

Easy · 20 questions · Worksheet #70087 · Percent Increase / Decrease

Name: ________________________

Date: ______________ Score: ______

  1. fill Percent change from 20 to 26. (% = ((new−old)/old)×100)
    ______________________________
  2. fill Percent change from 35 to 46. (% = ((new−old)/old)×100)
    ______________________________
  3. fill Percent change from 75 to 110. (% = ((new−old)/old)×100)
    ______________________________
  4. fill Percent change from 52 to 63. (% = ((new−old)/old)×100)
    ______________________________
  5. fill Percent change from 114 to 132. (% = ((new−old)/old)×100)
    ______________________________
  6. fill Percent change from 98 to 121. (% = ((new−old)/old)×100)
    ______________________________
  7. fill Percent change from 115 to 149. (% = ((new−old)/old)×100)
    ______________________________
  8. fill Percent change from 126 to 180. (% = ((new−old)/old)×100)
    ______________________________
  9. fill Percent change from 44 to 56. (% = ((new−old)/old)×100)
    ______________________________
  10. fill Percent change from 111 to 140. (% = ((new−old)/old)×100)
    ______________________________
  11. fill Percent change from 102 to 122. (% = ((new−old)/old)×100)
    ______________________________
  12. fill Percent change from 101 to 151. (% = ((new−old)/old)×100)
    ______________________________
  13. fill Percent change from 35 to 50. (% = ((new−old)/old)×100)
    ______________________________
  14. fill Percent change from 138 to 156. (% = ((new−old)/old)×100)
    ______________________________
  15. fill Percent change from 107 to 142. (% = ((new−old)/old)×100)
    ______________________________
  16. fill Percent change from 91 to 118. (% = ((new−old)/old)×100)
    ______________________________
  17. fill Percent change from 111 to 127. (% = ((new−old)/old)×100)
    ______________________________
  18. fill Percent change from 73 to 78. (% = ((new−old)/old)×100)
    ______________________________
  19. fill Percent change from 143 to 172. (% = ((new−old)/old)×100)
    ______________________________
  20. fill Percent change from 137 to 199. (% = ((new−old)/old)×100)
    ______________________________

Updated July 2026

FAQs

What is Percent Increase / Decrease?

Percent Increase / Decrease (percent change) is a arithmetic relationship written as Change relative to original or % = ((new−old)/old) × 100. Students use it to solve unknowns when enough values are known.

How do you calculate Percent Increase / Decrease step by step?

Write Change relative to original, substitute the known numbers carefully, then simplify. Worked walkthrough: Old = 50 New = 60 % = (10/50)×100 = 20%.

When is Percent Increase / Decrease taught in school?

Percent Increase / Decrease usually appears in arithmetic units during middle or secondary school. Match difficulty with MathDigits grade worksheets so practice fits the curriculum year.

What is a real example of Percent Increase / Decrease?

On this page the worked result is 20% increase. Generate a formula worksheet below for more unique practice sets.

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