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Free Percentage Change Calculator Online
Calculate percentage increase or decrease between two values.
Formula: ((new − old) ÷ |old|) × 100
Frequently Asked Questions
How do I calculate percentage increase?
((New Value − Old Value) ÷ Old Value) × 100. For example, from 100 to 125: ((125 − 100) ÷ 100) × 100 = 25% increase.
How do I calculate percentage decrease?
Same formula — if the result is negative, it is a decrease. From 200 to 150: ((150 − 200) ÷ 200) × 100 = −25% (25% decrease).
What is the difference between percentage change and percentage points?
Percentage change is relative (from one value to another). Percentage points are absolute differences between two percentages. For example, going from 10% to 15% is a 5 percentage-point increase but a 50% percentage change.
How do I calculate price change percentage?
Enter the original price as "From" and the new price as "To". The calculator shows the exact percentage increase or decrease.