Percentage Change Formula Explained
How to calculate a percent increase or decrease step by step, including the multiplication factor method.
Percentage Points vs Percentage Change
Why "10% more" and "10 percentage points more" are not the same thing, explained with a worked example.
Percentage Change: Examples Step by Step
Four worked examples — salary, population, exam scores, and fuel prices — each solved in three steps.
Percentage Change: Daily vs Monthly
Why daily percentage changes don't simply add up to the monthly change, and how to convert between the two.
Year-over-Year Percentage Change
The YoY formula, why it's used instead of comparing consecutive months, and a worked revenue example.
Percent Rate of Change Explained
What rate of change means, how it differs from a one-time percentage change, and how to calculate it over any time period.
Percent Change in Excel
The exact formula to calculate percentage change in Excel, plus formatting tips and how to handle zero or negative values.