Percentage change calculator

Initial value:
Final value:
	Calculate Reset
Percentage change result:	%
Calculation:

Percentage calculator ►

Percentage change calculation

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

percentage change = (V_new - V_old) / V_old × 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 ►

 

---

See also

• Percentage calculator
• Percent error calculator