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Our calculators use standard mathematical formulas and are tested for accuracy. Results are precise and reliable for most practical applications.

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Do you store my calculation data?

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Percentage Decrease Calculator - Multiple Calculators

Percentage Decrease Calculator

Calculate the percentage decrease between two numbers. Find how much a value has dropped.

Enter Values

Original Value

New Value

Your Results

Percentage Decrease--

Absolute Change--

Formula: ((Original - New) ÷ Original) × 100. Example: £100 → £75 = 25% decrease.

What is a Percentage Decrease Calculator?

A percentage decrease calculator helps you determine how much a value has dropped from an original amount to a new amount. It answers questions like “What is the percentage decrease from £100 to £75?” or “How much did the price drop?”

The Percentage Decrease Formula

Percentage Decrease = ((Original Value - New Value) ÷ Original Value) × 100

Example

Original: £100
New: £75
Decrease: £100 - £75 = £25
Percentage: (25 ÷ 100) × 100 = 25%

So £100 → £75 is a 25% decrease.

How Our Calculator Works

Enter original value: The starting amount
Enter new value: The ending amount
Get results: Percentage decrease and absolute change

Real-World Applications

Sale prices

“Was £80, now £60” → 25% decrease

Weight loss

“Went from 90kg to 81kg” → 10% decrease

Budget cuts

“Spending reduced from £2,000 to £1,600” → 20% decrease

Performance drops

“Sales fell from 500 to 400 units” → 20% decrease

Frequently Asked Questions

How do you calculate percentage decrease?

Use the formula: ((Original - New) ÷ Original) × 100. For example, 100 to 75: ((100-75)÷100)×100 = 25%.

What if the result is negative?

A negative result means the value increased, not decreased. Use our Percentage Increase Calculator for increases.

Is percentage decrease the same as discount?

Yes. A 25% discount means a 25% decrease from the original price. Our Discount Calculator can also help with sale prices.

Can the new value be zero?

Yes. If the new value is 0, the decrease is 100% (the value went to zero).