Reading Numbers
Rounded Percentages Can Make a Chart Total More Than 100
See how rounding can make percentages total 99 or 101, and learn when to inspect the underlying figures instead of assuming an error.
CONTEXT FOR EVERYDAY CURIOSITY
percentages
Numbers in Context
A Percentage Needs Its Denominator Before It Becomes a Headline
Check what a percentage is a percentage of before comparing headlines, survey results or changes across groups of different sizes.
Numbers in Context
Five Percentage Points Is Not the Same as Five Percent
Use a simple worked example to distinguish percentage-point changes from relative percentage changes, then check the denominator behind a headline.