Percentage points and percent increase describe different changes. The distinction matters whenever the values being compared are already percentages.
Direct difference means percentage points
Suppose a rate rises from 4% to 6%.
6% − 4% = 2 percentage pointsThis is the direct distance between the two rates.
Relative change means percent increase
To measure the same move relative to the original 4% rate:
((6 − 4) ÷ 4) × 100 = 50%The rate rose by 2 percentage points, which is a 50% increase relative to its former level. Both statements are correct, but they answer different questions.
A survey example
Support for an option moves from 40% to 46%.
- Percentage-point change: 46% − 40% = 6 points
- Percent increase: 6 ÷ 40 × 100 = 15%
Saying “support increased 6%” is ambiguous. “Six percentage points” identifies the direct change. “A 15% increase” identifies the relative change.
When to use each term
Use percentage points when comparing two rates, shares, margins, or percentages directly. Use percent increase when describing the size of a change relative to its starting value.
Find the relative increase between two rates
For two ordinary values, read percentage increase versus percentage change. For repeated rate changes, see compound percentage increases.
State both when clarity matters
Reporting both measures prevents a small point change from sounding misleadingly large—or a large relative change from sounding unimportant.