Percentage Calculator

Quickly calculate percentages with multiple calculation methods

Calculation Type

Input Values

Percentage Calculator Guide

Use this free percentage calculator to quickly solve common percentage problems: percentage of a number, what percentage one number is of another, percentage increase/decrease, and difference in percentage.

What you can calculate

  • Percentage of: e.g., what is 15% of 260?
  • What percent: e.g., 30 is what percent of 120?
  • Increase/Decrease: e.g., increase 240 by 12%.
  • Percentage change: e.g., change from 80 to 92 is what percent?

Key formulas

  • Percentage of: value = base × (percent ÷ 100)
  • What percent: percent = (part ÷ whole) × 100
  • Increase: new = original × (1 + percent ÷ 100)
  • Decrease: new = original × (1 − percent ÷ 100)
  • Percent change: ((new − old) ÷ |old|) × 100

FAQ

Q: What is the difference between percent and percentage points?
A: Percent is a relative ratio (e.g., 10%). Percentage points are absolute differences between percentages (e.g., from 10% to 12% is +2 percentage points).

Q: When to use percent vs. fraction?
A: Use percent for readability in reports; fractions are common in math contexts. They are equivalent representations.