Percentage Calculator
Master percentages instantly! Free online calculator to find X% of any number, calculate shocking percentage changes, and solve “X is what % of Y” problems with ease.
What is X% of Y?
X is what percent of Y?
Percentage Change (Increase/Decrease)
What is Percentage Calculator?
A percentage calculator is a digital tool that simplifies percentage-based calculations, such as determining portions of numbers, comparing ratios, or measuring growth/decline rates. By applying core mathematical formulas automatically, it delivers instant, error-free results for everyday needs like discounts, tax computations, test scores, and financial analysis.
Designed for universal use, these calculators serve students, shoppers, analysts, and professionals alike. Modern versions feature intuitive interfaces that require only basic inputs, along with advanced functionalities like visual data charts, step-by-step breakdowns, and multi-operation support for comprehensive solutions—all delivering accurate percentages in seconds.
What is X% of Y?
This calculation determines a portion of a number (Y) based on a given percentage (X). It answers questions like:
What is 20% of 150?
How much is 7.5% of $200?
Formula:
Example:
To find 30% of 500:
Answer: 150
X is What Percent of Y?
This calculation determines what portion X represents of a whole value Y, expressed as a percentage. It answers questions like:
- 25 is what percent of 200?
75?
Formula:
Example:
To find what percent 40 is of 500:
Answer: 8%
Percentage Increase/Decrease?
This tool calculates how much a value has grown or shrunk in percentage terms when comparing an original value (X) to a new value (Y). It answers questions like:
- A price rose from 65 – what’s the % increase?
Sales dropped from 300 to 240 units – what’s the % decrease?
Formula:
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Examples:
1. Increase: A stock grows from 100
2. Decrease: Temperature falls from 30°C → 24°C
Answer: 150
