10/30 = ≈33.33%
Rounded to 2 decimal places.
A value like 33.33% can show up when one out of three equal options is chosen, such as a third of a group picking the same snack. You might also see it in progress updates when about one-third of a task is finished.
To picture it quickly, think of one part out of three equal parts, or roughly one-third of a whole. On a 100-square grid, it would cover about 33 squares.
A common point of confusion is treating 33.33% as exactly one-third. It is a rounded value, so repeating the decimal continues beyond the digits shown.