About Percentage Calculator
Percentage calculator handles percentages, increase/decrease rate, discounts, change rate, share and reverse original value. Useful for ecommerce discounts, analytics, financial growth, scores and daily ratio calculations.
How to Use
- Choose a percentage calculation type
- Enter original value, new value or percent
- Let the tool calculate automatically
- Copy the result for your scenario
Frequently Asked Questions
- How do I calculate growth rate?
- Growth rate = (new value - original value) / original value x 100%. If the original value is zero, normal growth rate is not meaningful without context.
- How do discounts work?
- A 20% discount means you pay 80% of the original price. Enter the original price and discount rate to get final price and savings.
- Percent vs percentage points?
- Percent is a relative ratio. Percentage points are the direct difference between two percentages, such as 10% to 15% being a 5-point increase.