A free online percentage change calculator that computes the increase or decrease between an original value and a new value. Shows the percentage change, absolute difference, ratio factor, and reads the result in plain English. Perfect for financial analysis, sales tracking, grade calculations, and data comparison.
Enter the original (old) value.
Enter the new value.
Instantly see percentage change, difference, and factor.
Read the result explained in plain language.
Percentage change = (New - Original) / |Original| × 100. A positive result means an increase, negative means a decrease.
Percentage change cannot be calculated when the original value is zero, as division by zero is undefined.
Free online tool — works in your browser, no sign-up required. Start using it right now.
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