66.67% is the percentage equivalent of the fraction 4/6.
When you look at the fraction 4/6, you can also think of it as two parts out of three, which is the same as saying about two‑thirds of a whole. That amount shows up as a little more than half, right around two‑thirds, which matches the percentage above.
In everyday use, you might see 66.67% on a report card, a sales chart, or a recipe that calls for two‑thirds of an ingredient. It’s a handy figure to remember because it tells you just how much of something you have when you have four out of six equal parts.