How this percentage calculator helps
Percentage calculations come up all the time in shopping, finance, school, statistics, fitness and daily life. This calculator keeps the most common percentage formulas on one page without extra clutter.
Common percentage calculations
You can use this page to find a percent of a number, check what percent one value is of another, calculate percentage increase or decrease, and compare two numbers with percentage difference.
Percent increase and decrease
Percentage increase shows how much a new value went up compared with the original value. Percentage decrease shows how much it went down. This is useful for prices, sales, weight changes, traffic changes, profits and many other everyday comparisons.
Percentage difference
Percentage difference compares two values by looking at the difference relative to their average. It is useful when neither number is clearly the starting point and you simply want to compare them.