Percentage Calculator
Percentages are dimensions out of 100. This multi-mode calculator helps solve simple percent queries instantly.
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How do Percentages Work?
A percentage is a number or ratio expressed as a fraction of 100. It is denoted using the percent sign (%). The term percentage comes from the Latin phrase 'per centum', meaning 'by the hundred'.
Common Percentage Formulas
Depending on what you are trying to solve, different mathematical representations are used:
1. Finding X% of Y
This is the most basic calculation. Use this formula:
Example: 15% of 200 = (15 / 100) x 200 = 30.
2. Finding What Percentage X is of Y
To find the proportion of one value to another, use:
Example: 30 is what percent of 150? = (30 / 150) x 100 = 20%.
3. Percentage Change (Increase/Decrease)
To find the percentage growth or reduction between an older value and a newer value, use:
Example: If a stock price goes from $100 to $125, the change is: [(125 - 100) / 100] x 100 = 25% increase.
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Frequently Asked Questions
Q.How do I calculate percent change?
Formula: [(New Value - Old Value) / Old Value] * 100.
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