12/13 as a percentage is 92.31%. This number tells you that 12 parts out of 13 are almost the whole, just a little short of 100 %.
When you see 92.31% on a report or a grade, it means the value is very high—only about 7.69 % is missing. In everyday language, people might round it to “about 92 %” for quick conversation.
Because the figure is rounded to two decimal places, the exact value is a tiny bit higher or lower depending on the calculator, but 92.31% is the standard way to present it in most settings.
