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Calculate percentage change between two values instantly. See if it's an increase or decrease, get the absolute change, and copy results.
Percentage change measures the relative difference between an original value and a new value, expressed as a percentage. The formula is ((New − Original) / |Original|) × 100. Positive results indicate an increase; negative results indicate a decrease.
25% increase
The starting value before the change
The value after the change occurred
See the percentage change and absolute difference
((New - Original) / |Original|) × 100Formula
change % = (new value - old value) / |old value| x 100new value = the figure at the end of the period
old value = the figure at the start, which is the base the change is measured against
|old value| = the absolute value, so a negative starting figure still gives a signed result
Worked Example
A price moving from 80 to 100, then back
Did you know? Equal percentages do not cancel out, because each is measured against a different base. A 50% loss needs a 100% gain to get back to where it started, which is why investment returns are chained rather than added.
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