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Price Increase, Decrease Percentage Calculator

This calculator helps you determine the percentage change between an old price and a new price, showing whether it’s an increase or a decrease.

Price Change Percentage Estimator

Input Fields
$
Enter the original price
$
Enter the new price
If enabled, the result will update automatically when you change any value.

Price Change Percentage Formula

Formula
\[ \text{Percentage Change} = \left( \frac{\text{New Price} – \text{Old Price}}{\text{Old Price}} \right) \times 100 \]

Where:

  • $$New Price$$ = The updated or current price
  • $$Old Price$$ = The original or previous price
  • $$Percentage Change$$ = The rate of increase or decrease from the old to the new price


Price Change – Calculation Example

Suppose the old price of a product was $80, and the new price is $100.

Calculation:

  1. $$\text{Percentage Change} = \left( \frac{100 – 80}{80} \right) \times 100$$
  2. $$= \left( \frac{20}{80} \right) \times 100 = 0.25 \times 100 = 25\%$$

So, the price increased by 25%.

This calculator is useful for retail pricing, financial analysis, budgeting, and personal finance decisions. It quickly shows whether a price has gone up or down, and by what percentage, helping individuals and businesses assess inflation, discounts, or price shifts.

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