Discount Calculator

Discount is evaluated from Original Price, Discount% and Sale Price. The calculation reports Final Sale Price, You Save and Discount Percentage.

Results

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About the Discount Calculator

Discount is treated here as a quantitative relation between Original Price, Discount% and Sale Price and Final Sale Price, You Save and Discount Percentage.

The calculator uses a multi formula configuration. Each reported value is read as a direct evaluation of the stored rules with the declared field formats and units.

Formula basis:
Final Price = Original Price x (1 - Discount% / 100)
Savings = Original Price x Discount% / 100
Discount% = (Original Price - Sale Price) / Original Price x 100

Interpret the outputs in the order shown by the result fields. Optional inputs affect only the outputs that depend on those variables.

Formula & How It Works

The calculation applies the following relations exactly as recorded in the metadata:

Final Price = Original Price x (1 - Discount% / 100)
Savings = Original Price x Discount% / 100
Discount% = (Original Price - Sale Price) / Original Price x 100

Each output field is produced by substituting the supplied inputs into the relevant relation and then applying the declared rounding or text format.

Worked Examples

Example 1: Black Friday TV: original $799.99, 35% off

Inputs

original_price: 799.99 discount_pct: 35
Final Sale Price: $519.99. You Save: $280. Discount Percentage: 35%

With Original Price = 799.99 and Discount% = 35 as the stated inputs, the result is Final Sale Price = $519.99, You Save = $280 and Discount Percentage = 35%. Each value corresponds to the declared output fields.

Example 2: Clothing store clearance: jeans originally $89, sale price $49

Inputs

original_price: 89 sale_price: 49
Final Sale Price: $49. You Save: $40. Discount Percentage: 44.94%

With Original Price = 89 and Sale Price = 49 as the stated inputs, the result is Final Sale Price = $49, You Save = $40 and Discount Percentage = 44.94%. Each value corresponds to the declared output fields.

Example 3: Car dealership: sticker $42,000, buyer negotiated to $38,500

Inputs

original_price: 42000 sale_price: 38500
Final Sale Price: $38,500. You Save: $3,500. Discount Percentage: 8.33%

With Original Price = 42,000 and Sale Price = 38,500 as the stated inputs, the result is Final Sale Price = $38,500, You Save = $3,500 and Discount Percentage = 8.33%. Each value corresponds to the declared output fields.

Example 4: Software subscription: annual plan $99, monthly plan would be $12/mo ($144/year)

Inputs

original_price: 144 sale_price: 99
Final Sale Price: $99. You Save: $45. Discount Percentage: 31.25%

With Original Price = 144 and Sale Price = 99 as the stated inputs, the result is Final Sale Price = $99, You Save = $45 and Discount Percentage = 31.25%. Each value corresponds to the declared output fields.

Common Use Cases

  • Calculate final price after percentage discount
  • Find discount percentage from original and sale price
  • Determine total savings on a purchase