Percent Change Calculator
Calculate percentage increase or decrease between two values.
Compare two values
Percent change calculator guide
WeCovr's percent change calculator measures the relative change between an original value and a new value. It is useful for checking percentage increases and decreases in prices, salary, metrics, and performance.
What percent change means
Percent change shows how large a change is relative to the original value rather than just giving the raw difference.
That makes it useful when you want a proportional comparison instead of an absolute one.
Works for increases and decreases.
Shows relative change from the original value.
Useful for finance, pricing, salary, and general maths.
Why percent change is useful
A change of 10 means something very different on a base of 20 than it does on a base of 1,000. Percentage change helps make those comparisons easier.
Key limitation
This calculator depends on the original value as the reference point. If the original value is zero, percentage change cannot be calculated in the usual way.
Ways to compare values
| Measure | What it shows | Example use |
|---|---|---|
| Absolute change | Raw difference only | Price rose by 5 |
| Percent change | Relative change from original | Price rose by 10% |
| Ratio | Relationship between two values | 2:1 comparison |
Related WeCovr resources
FAQs
Can this show a percentage decrease?
Yes. If the new value is lower than the original value, the result will be negative, showing a decrease.
Why can't the original value be zero?
Because percentage change divides by the original value, and division by zero is not defined.
Is percent change the same as percentage points?
No. Percentage points describe an arithmetic difference between two percentages, while percent change is a relative change from a starting value.
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