Enter the original and new values to see the percentage change. Works for prices, traffic, revenue, grades, and more.
Find the % increase or decrease in seconds
Formula:
Percentage Change = ((New − Original) ÷ Original) × 100To find how much a value increased or decreased, subtract the original from the new value, divide by the original, then multiply by 100. It’s the most direct way to measure relative change.
Percentage Change = ((New − Original) ÷ Original) × 100
When the result is positive, it’s a growth. When it’s negative, it’s a drop. You can also check the increase calculator or decrease calculator for specialized cases.
You can calculate percentage change instantly in any spreadsheet:
Formula: =(B2-A2)/A2 then format as %.
Safe version: =IF(A2=0,"",(B2-A2)/A2)
To find what percent one number is of another, try the Percentage of a Number Calculator.
Example: a product goes from $48 to $57.60.
The price increased by 20%. You can also find new values directly with our percent increase tool.
Tip: Use New = Original × (1 + %Change). For a 12% increase on 250, that’s 280.
A 50% drop followed by a 50% rise doesn’t get you back to even. If a stock falls from 100 to 50 (−50%) and then rises 50%, it ends at 75. That’s the asymmetry of relative change.
To compare two values directly without baselines, check the Percentage Difference Calculator.
Price: $100 → $125
Result: 25% increase
Visitors: 1,000 → 800
Result: 20% decrease
Revenue: $80,000 → $100,000
Result: 25% increase
Grade: 72 → 90
Result: 25% increase
Decimals: 120.5 → 118.2
Result: 1.91% decrease
Big jump: 40 → 100
Result: 150% increase
Negative base: −100 → −50
Result: 50% increase relative to the original
Population: 2,000 → 1,900
Result: 5% decrease
Subtract the original value from the new value, divide by the original, then multiply by 100. Example: (125 − 100) ÷ 100 × 100 = 25%.
Percentage Change = ((New − Original) ÷ Original) × 100. Positive is increase, negative is decrease.
Use =(B2−A2)/A2 and format as %. Or =(B2/A2)−1. Example: original in A2, new in B2.
Yes, but interpret carefully. The formula uses the original value as the baseline, so direction and magnitude follow that sign.
Percentage change compares a value to its own starting point ((New−Original)/Original). Percentage difference compares two values relative to their average (|A−B| / ((A+B)/2)).
Use the same formula ((New−Original)/Original). The sign follows the original baseline. For example, −100 to −50 is a +50% change relative to −100.
Use =(B2−A2)/A2 and format as %. To avoid #DIV/0!, wrap with =IF(A2=0, "", (B2−A2)/A2).
Mixing units, dividing by the wrong baseline, using the wrong sign with negatives, averaging percentage changes arithmetically instead of using compounding.
Ready to explore more percentage tools?
Try the Percentage Increase, Percentage Decrease, or Percentage Difference calculators — or view all calculators for more quick tools.
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