Pourcentage inversé
Calculateur en ligne gratuit : Pourcentage inversé. Obtenez un résultat précis et instantané avec formule détaillée.
Pourcentage inversé
Retrouvez la valeur initiale avant application du pourcentage
V / (1 + P/100)
V / (1 - P/100)
Aucun calcul pour le moment.
Comment calculer
Original = Final ÷ (1 + P/100) [increase] or Final ÷ (1 − P/100) [decrease]
If a final value incorporates an increase of P percent, the original value is calculated by dividing the final value by (1 + P ÷ 100). If it incorporates a decrease of P percent, divide by (1 − P ÷ 100). This reverses the percentage scaling factor precisely.
* Exemple: Final $60 after 20% increase → Original $50
Guide de calcul manuel étape par étape
Étape 1 : Saisissez vos données dans le calculateur et visualisez le résultat selon la formule.
Étape 2 : Saisissez vos données dans le calculateur et visualisez le résultat selon la formule.
Étape 3 : Saisissez vos données dans le calculateur et visualisez le résultat selon la formule.
Applications concrètes
Tax Auditing & Accounting
Finding the original pre-VAT price of a receipt total of $115 when VAT is 15% ($115 ÷ 1.15 = $100 original).
Retail Discount Recovery
Determining the original list price of a discounted item purchased for $80 after a 20% sale ($80 ÷ 0.80 = $100 list price).
Payroll Base Salary Calculation
Uncovering a worker's base pay prior to a 10% performance bonus payout.
Pourcentage inverséExemples concrets
Comment ça marche
Reverse percentage calculations allow you to work backward from a final total amount to find the original pre-tax, pre-discount, or pre-raise starting value. This tool is invaluable when auditing receipts, determining original wholesale costs before tax additions, or calculating base salaries from total compensation.
Calculateurs associés
Foire aux questions
How do I calculate the original price before a discount?
Divide the discounted price by (1 - discount percentage as a decimal). For example, if a jacket cost $60 after a 25% discount, divide $60 by 0.75 to get $80.
Why can't I just add the percentage back to the final number?
Because percentages scale relative to the base they are applied to. Adding 20% to $80 gives $96, not the true original $100 price, because 20% of $80 is smaller than 20% of $100.
Does reverse percentage work for calculating pre-tax amounts?
Yes, to find the pre-tax price, divide the total tax-inclusive price by (1 + tax rate as a decimal).