Percentage Decrease Calculator
Calculate the percentage decrease between two values with step-by-step solutions
Percentage Decrease = ((Original - New) / Original) × 100
Calculate how much a value has decreased as a percentage of the original
The starting/higher value
The ending/lower value
Quick Examples
Not a Decrease
The new value must be less than the original value. For increases, use the Percentage Increase Calculator.
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-%
Decrease
Visual Representation
Percentage Decrease
-%
Relative drop
Absolute Decrease
-
Numerical difference
Remaining
%
Of original value
Multiplier
New ÷ Original
Calculation Breakdown
Common Percentage Decreases
| Decrease | Meaning | Remaining | Multiplier |
|---|---|---|---|
| -10% | Small reduction | 90% | 0.9x |
| -25% | Quarter reduction | 75% | 0.75x |
| -33.3% | Third reduction | 66.7% | 0.67x |
| -50% | Halved | 50% | 0.5x |
| -75% | Three-quarters lost | 25% | 0.25x |
| -100% | Complete loss | 0% | 0x |
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About Percentage Decrease Calculator
What is a Percentage Decrease Calculator?
A percentage decrease calculator determines how much a value has decreased relative to its original amount, expressed as a percentage. This is essential for understanding price drops, discounts, depreciation, and value reductions.
How to Calculate Percentage Decrease
The Formula
Percentage Decrease = ((Original Value - New Value) / Original Value) × 100
Step-by-Step Process
- Find the decrease: Subtract the new value from the original value
- Divide by original: Divide the decrease by the original value
- Convert to percentage: Multiply by 100
Example Calculation
If a product price decreased from $100 to $75:
- Decrease = $100 - $75 = $25
- Divide: $25 ÷ $100 = 0.25
- Percentage: 0.25 × 100 = 25% decrease
Common Applications
Financial
- Price reductions: Track sale prices and discounts
- Stock losses: Calculate investment declines
- Depreciation: Asset value reduction over time
- Budget cuts: Measure spending reductions
Business
- Sales decline: Track revenue decreases
- Cost reduction: Measure expense savings
- Inventory shrinkage: Calculate stock losses
Personal
- Weight loss: Track fitness progress
- Bill reductions: Compare utility cost savings
- Fuel efficiency: Measure consumption improvements
Understanding the Results
| Decrease % | Meaning |
|---|---|
| 10% | Small decrease |
| 25% | Quarter reduction |
| 50% | Halved |
| 75% | Three-quarters lost |
| 100% | Complete loss (zero) |
Frequently Asked Questions
Can percentage decrease be more than 100%?
No, percentage decrease is capped at 100% (when the new value reaches zero). The value cannot go below zero in standard decrease calculations.
What's the difference between percentage decrease and percentage difference?
Percentage decrease is directional (from original to new), while percentage difference compares two values symmetrically without regard to which is the original.
How do I calculate the new value after a percentage decrease?
Use: New Value = Original Value × (1 - Percentage/100)
How do I find what percentage off I need to reach a target price?
Use: Required Decrease % = ((Original - Target) / Original) × 100
Tip: This calculator only shows decreases. If your new value is higher than the original, use the percentage increase calculator instead.