3/72 as a percentage is 4.17%. This tiny fraction represents just a little over four parts of every hundred, so it’s easy to picture in everyday numbers.
The fraction 3/72 can be simplified to 1/24, which still gives the same size when you look at it on a chart or a pie graph. Seeing it as a part of a whole helps you understand how small the share really is.
In practical terms, 4.17% might be the chance of a rare event happening, or the tiny slice of a budget you allocate to a small project. Knowing the percentage lets you compare it quickly with other numbers without dealing with fractions.