3/95 as a percentage is 3.16%. This tiny slice of a whole is useful when you need a quick sense of scale without dealing with fractions.
In everyday language, saying something is about three percent of a total is easier to understand than a fraction like 3/95. It tells you that for every hundred parts, only a little over three are included.
When you see 3.16% on a chart, a label, or a report, you can instantly recognize it as a very small portion—just enough to be noted but not enough to dominate the picture.