How to Use This Calculator
- Enter your base value in the "Base Value" field. This is the original value from which percentages will be added or subtracted.
- If you want to add a percentage, enter it in the "Percentage to Add (%)" field. For example, enter 20 for adding 20%.
- If you want to subtract a percentage, enter it in the "Percentage to Subtract (%)" field. For example, enter 10 for subtracting 10%.
- Click the "Calculate" button to compute the resulting value.
- The calculator will display the final value and show a step-by-step breakdown of the calculation.
Example Usage
Suppose you have a product that costs $100 and you want to add a 25% markup and then offer a 10% discount:
- Base Value: $100
- Percentage to Add: 25
- Percentage to Subtract: 10
- Result: $100 × (1 + 25/100) × (1 - 10/100) = $100 × 1.25 × 0.9 = $112.50
Working Principle
This calculator uses the formula: New Value = Base Value × (1 + Percentage Add/100) × (1 - Percentage Subtract/100). This approach correctly accounts for percentage changes applied sequentially.
Common Applications
- Calculating price changes with markup and discounts
- Determining final costs after tax and discounts
- Adjusting values based on percentage increases or decreases
- Financial calculations for interest rates and growth