Percentage change from 90 to 20

Instant answer with step-by-step formula

Percentage change from 90 to 20 = 77.777778% decrease
((20 − 90) ÷ 90) × 100 = -77.777778% (decrease)

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Step-by-step explanation

  1. Write the formula: ((New − Old) ÷ Old) × 100
  2. Subtract: 20 − 90 = -70
  3. Divide by old value: -70 ÷ 90 = -0.777778
  4. Multiply by 100: -77.777778% (decrease)

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