Percent vs. Percentage Points: What's the Difference?
Why 'a 3% rise' and 'a 3 percentage point rise' mean very different things, with examples from interest rates, tax brackets, and poll numbers.
These two phrases get swapped constantly in news and financial reporting, but they describe different math. A percentage point is a simple subtraction between two percentages. A percent change (or just "percent") is a relative change — how big that difference is compared to the starting percentage.
Interest rates: a small headline can hide a big move
Say a savings account's interest rate rises from 2% to 3%. In percentage points, that's a 1 percentage point increase — a simple subtraction, 3 − 2 = 1. But as a percent change, it's a 50% increase, since ((3 − 2) ÷ 2) × 100 = 50%. Both descriptions are correct; they just answer different questions.
Poll numbers
A candidate's approval rating moves from 40% to 44%. That headline usually gets reported as "up 4 points" (percentage points), which is correct — but describing it as "up 4%" is a common and technically inaccurate shorthand, since the actual percent change is ((44 − 40) ÷ 40) × 100 = 10%.
| Metric | From → To | Percentage point change | Percent change |
|---|---|---|---|
| Interest rate | 2% → 3% | +1 pt | +50% |
| Approval rating | 40% → 44% | +4 pts | +10% |
| Tax rate | 22% → 24% | +2 pts | +9.1% |
Which one should you use?
Use percentage points when comparing two percentages directly (this is almost always what changes in tax brackets, interest rates, and approval ratings actually mean). Use percent change when you want to express how large that shift is relative to the starting value — which is usually the more meaningful number for personal finance decisions, since a 1-point rate increase matters very differently on a 2% base than on a 20% base.
The Percentage Calculator's "% change" tab calculates the true percent change between any two values — pair it with simple subtraction for the percentage-point difference.