Percentage Decrease from 40 to 30
The percentage change from 40 to 30 is −25%.
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Currency mode
Percentage change from X to Y
→
40 → 30
−25%
Decrease of 10 · Formula: (30 − 40) ÷ 40 × 100
Before vs. After
Original40
New value30
▼ −25% decrease
Other changes from 40
| New Value | % Change |
|---|---|
| 60 | +50% |
| 50 | +25% |
| 48 | +20% |
| 44 | +10% |
| 36 | −10% |
| 32 | −20% |
| 30 ← | −25% |
| 20 | −50% |
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How to Calculate the Percentage Change
Percentage change tells you how much a value has gone up or down relative to its original amount.
1
Formula: % Change = (New − Old) ÷ |Old| × 100
2
Difference: 30 − 40 = -10
3
Divide: -10 ÷ 40 = -0.25
4
Multiply by 100: = −25%
(30 − 40) ÷ 40 × 100 = −25%
The value decreased by 10 — a −25% decrease.
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