MyCalculatorHow it works
Formula: ((New − Old) ÷ Old) × 100.
Example
From 150 to 180: ((180−150)÷150)×100 = 20% increase.
Assumptions & limitations
If the new value is lower than the original, the result will be negative — use the percentage decrease calculator to express it as a decrease.
Frequently asked questions
What if the new value is smaller?
The result will show as negative, meaning a decrease rather than an increase.