Percentage change from 100 to 99

Instant answer with step-by-step formula

Percentage change from 100 to 99 = 1% decrease
((99 − 100) ÷ 100) × 100 = -1% (decrease)

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Step-by-step explanation

  1. Write the formula: ((New − Old) ÷ Old) × 100
  2. Subtract: 99 − 100 = -1
  3. Divide by old value: -1 ÷ 100 = -0.01
  4. Multiply by 100: -1% (decrease)

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