# Percentage change free online calculator

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Percentage calculator »

## Percentage change calculation

The percentage change from old value (Vold) to new value (Vnew) is equal to the old and new values difference divided by the old value times 100%:

percentage change = (Vnew - Vold) / Vold × 100%

#### Example #1

Price percentage increase from old value of \$1000 to new value of \$1200 is caluclated by:

percentage change = (\$1200 - \$1000) / \$1000 × 100%

= 0.2 × 100% = 20%

#### Example #2

Price percentage decrease from old value of \$1000 to new value of \$800 is caluclated by:

percentage change = (\$800 - \$1000) / \$1000 × 100%

= -0.2 × 100% = -20%

Percentage calculator »

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