Percentage of a Number
Find p% of a number, connect percents to decimals and fractions, and learn how reverse percentage setups differ from simple multiply problems.
Topical series
Percentage guides
This blog supports the Percentage Calculator experience: clear explanations for percent of a number, what percent one value is of another, and percent change, plus the vocabulary you need before you open the on-site tool.
Articles are ordered so you can learn in sequence, from what a percentage means through formulas, how-to steps, examples, and dedicated notes on increase, decrease, difference, and change. Each guide stays close to homework, budgeting, discounts, and simple reporting.
When you only need a fast answer, use the Percentage Calculator on the home page with the same three question types in mind. Return here when you want context, wording, and common mistakes spelled out in plain language.
Articles in recommended order
Percentage Change Calculator
Percent change for increases and decreases, trend reading tips, and honest language for dashboards and reports.
Percentage Difference Calculator
Percentage difference compares two values symmetrically. Learn denominator choices, reporting habits, and how difference differs from change.
Percentage Decrease Calculator
Learn percentage decrease for discounts, reductions, and depreciation-style comparisons, with careful baseline language.
Percentage Increase Calculator
Understand percentage increase with a clear baseline, worked salary and price examples, and language that matches finance dashboards.
Percentage Examples
Worked percentage examples for test scores, discounts, tax lines, and simple finance comparisons, with notes on choosing the right baseline.
Percentage Calculator
How the Percentage Calculator on this site maps to percent-of, part-whole, and percent change questions, with tips for trustworthy results.
How to Calculate Percentage
A practical method for calculating percentages by hand, with calculator checks, honest shortcuts, and habits that keep your baseline visible.
Percentage Formula
See the core percentage formulas for part-whole questions, percent of a number, and percent change, with tips on keeping the baseline consistent.