Porcentaje inverso
Calculadora gratuita online de Porcentaje inverso. Obtén resultados instantáneos con desglose paso a paso y fórmula matemática.
Porcentaje inverso
Halla el valor original antes del cambio porcentual
V / (1 + P/100)
V / (1 - P/100)
Sin cálculos aún.
Cómo calcular
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.
* Ejemplo: Final $60 after 20% increase → Original $50
Guía de cálculo manual paso a paso
Paso 1: Introduce los valores requeridos en la calculadora y revisa la fórmula aplicada.
Paso 2: Introduce los valores requeridos en la calculadora y revisa la fórmula aplicada.
Paso 3: Introduce los valores requeridos en la calculadora y revisa la fórmula aplicada.
Aplicaciones en el mundo real
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.
Porcentaje inversoEjemplos resueltos
Cómo funciona
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.
Calculadoras relacionadas
Preguntas frecuentes
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).