Percentage
Work out percentages, percentage change and increases or decreases.
Percentage of a value
15 × 200 ÷ 100 = 30
Part as a percentage of a whole
30 ÷ 120 × 100 = 25%
Percentage change
(100 − 80) ÷ |80| × 100 = 25%, an increase
Increase or decrease by a percentage
Direction
200 × (1 + 15 ÷ 100) = 230
Percentage point difference
4.25% − 3.5% = 0.75 percentage points