When you turn 4/80 into a percent, you get 5.00%. This small number shows how tiny a part of the whole it represents.
The fraction 4/80 can be simplified to 1/20, which still equals the same 5 percent of any total. It’s useful when you want to compare a little piece to the whole thing in everyday situations, like a discount or a test score.
In practical terms, if you have 80 items and you take 4 of them, you have taken exactly five out of every hundred parts. That’s a clear, easy‑to‑understand way to see the size of the portion.