Calculator Tools
Percentage Change Calculator
Compare an old value with a new value and see both the absolute and percentage change.
25.00%Percentage change
25Absolute difference
IncreaseDirection
Detailed comparison will appear here.
Results update instantly.
Percentage change formula
Percentage change = (new − old) ÷ |old| × 100.
Why the old value cannot be zero
Percentage change needs a non-zero reference value. When the original value is zero, the percentage change is undefined.