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Use this calculator to find the percentage change between an original value and a new value. It is helpful for prices, sales, salaries, marks, business data, finance comparisons and many everyday calculations.
The original value cannot be zero for this formula, because the calculation divides by the original value.
This calculator compares an original value with a new value and shows how much the value changed in percentage terms. It can identify whether the change is an increase or a decrease and also show the absolute difference between the two numbers.
Percentage change is widely used because it makes comparisons easier across different scales and situations.
The tool automatically detects the direction of change based on the entered values.
Percentage Change = ((New Value − Original Value) ÷ Original Value) × 100
A positive result means an increase. A negative result means a decrease.
Suppose the original value is 200 and the new value is 250.
Change = 250 − 200 = 50
Percentage Change = (50 ÷ 200) × 100 = 25%
This means the value increased by 25%.
If the new value were 150 instead, then the result would show a 25% decrease.
This calculator gives a direct mathematical result from the entered values. It is accurate for standard percentage change calculations, but interpretation still depends on context and on whether the original and new values are comparable.
The original value cannot be zero in this method. When original value is zero, a standard percentage change result is not defined.
Disclaimer: This calculator is provided for informational and educational use. For formal analysis or reporting, make sure the compared values are contextually appropriate and measured on the same basis.