Percentage Calculator
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What is a Percentage?
A percentage is a ratio or number expressed as a fraction of 100. It is denoted using the percent sign (%). Percentages are widely used in everyday finance, shopping discounts, interest rates, tax rates, and statistical analysis.
Common Percentage Formulas
- Calculate X% of Y:
Formula = (X / 100) × Y - Percentage Change (Increase/Decrease):
Formula = ((New - Old) / Old) × 100 - Percentage Share:
Formula = (Part / Total) × 100
Frequently Asked Questions (FAQ)
How do I calculate a 20% discount?
Multiply the original price by 0.20 to get the discount amount, then subtract that amount from the original price. For example, 20% off $50 is $10 savings, making the final price $40.
What is the percentage increase formula?
Subtract the initial value from the final value, divide the result by the initial value, and multiply by 100.