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money
Calculate percentage change from an old value to a new one. See the exact increase or decrease for prices, salaries, growth and more.
Enter your values and select Calculate to see the result.
Percentage change tells you how much a value has risen or fallen relative to where it started. It is used for prices, salaries, website traffic, stock values and any figure that moves over time.
Enter the old value and the new value to see the percentage increase or decrease and the absolute change. The calculation always measures against the old value, which is why a rise from 50 to 65 is 30% but a fall from 65 back to 50 is only 23%.
((new − old) ÷ |old|) × 100
Going from 50 to 65 is a 30% increase; going from 65 back to 50 is a 23.08% decrease.
Estimates only. This calculator gives a general estimate and is not financial, tax or legal advice. Rates, fees and rules vary by country and situation. Read our disclaimer.
Subtract the old value from the new value, divide by the old value and multiply by 100. From 50 to 65 is (65 − 50) ÷ 50 × 100 = 30%.
Percentage change is always measured against the starting value. Going from 50 to 65 is +30%, but going from 65 back to 50 is only −23.08%, because the base is now 65.
A percentage change from zero is undefined because it would divide by zero, so the calculator asks for a non-zero starting value.
Yes, but read the result with care. The calculation uses the size of the old value, so moving from −50 to −40 is shown as a 20% increase.