Percentage change from 80 to 100

Instant answer with step-by-step formula

Percentage change from 80 to 100 = 25% increase
((100 − 80) ÷ 80) × 100 = 25% (increase)

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Step-by-step explanation

  1. Write the formula: ((New − Old) ÷ Old) × 100
  2. Subtract: 100 − 80 = 20
  3. Divide by old value: 20 ÷ 80 = 0.25
  4. Multiply by 100: 25% (increase)

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