What it is for
Percentages are common in discounts, growth rates, margins, taxes and grade weights. Converting them to a number reduces mental math errors.
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Percentage Calculator
Find percentages, increases and decreases quickly.
Formula
The percentage result equals value multiplied by percent divided by 100. The increased value adds that result, and the decreased value subtracts it.
Caution
For finance, tax or investment questions, confirm the period, compounding method and rounding rule before relying on the result.
FAQ
How do I calculate a 15% discount?
Enter the price and 15, then read the decreased value.
Can it calculate an increase?
Yes. Use the increased value result.