Percentage change from 100 to 30

Instant answer with step-by-step formula

Percentage change from 100 to 30 = 70% decrease
((30 − 100) ÷ 100) × 100 = -70% (decrease)

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Step-by-step explanation

  1. Write the formula: ((New − Old) ÷ Old) × 100
  2. Subtract: 30 − 100 = -70
  3. Divide by old value: -70 ÷ 100 = -0.7
  4. Multiply by 100: -70% (decrease)

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