12/91 as a percentage is 13.19%. This small fraction shows up in everyday situations, like when you split a group of 91 items into 12 parts. The number tells you that each part is just a little over one‑tenth of the whole.
The fraction 12/91 can be simplified only a little, but its decimal form (0.1319…) makes it easy to compare with other values. When you think of it as a percent, you can quickly see that it’s a little more than 13 out of every 100.
In practical terms, if you had $91 and spent $12, you’d have used about 13.19% of your money. Knowing the percent version helps you judge sizes without doing extra math each time.