Percentage Calculator
Instantly calculate percentages, ratios, and value changes with live dynamic results.
About the Percentage Calculator Engine
Percentages are ubiquitous in finance, sales, retail, and data analysis. Whether you need to calculate a 15% tip, determine your profit margin, or figure out the discount percentage of a sale item, the OnlinePaste.com Percentage Calculator delivers instantaneous, mathematically precise answers directly in your browser.
Percentage of a Number
Formula: (X / 100) × Y
Use this to find a specific slice of a whole. Perfect for calculating taxes, tips, or estimating discounts. (e.g., finding out that 20% of 150 is 30).
Find the Percentage
Formula: (X / Y) × 100
Use this to determine ratios and proportions. Ideal for grading tests, calculating hit rates, or finding out what slice of the budget was spent. (e.g., 30 is 20% of 150).
Percentage Change
Formula: ((Y - X) / |X|) × 100
Use this to track growth or decline over time. Critical for tracking stock portfolios, tracking weight loss, or comparing year-over-year sales metrics.