When you turn 76/79 into a percent you get 96.20%. That number tells you the fraction is just a little bit under a whole, or 100 %.
In everyday terms, 96.20% means you have almost all of something. If you were measuring a test score, a project completion, or a piece of a puzzle, you would be very close to finishing it completely.
Because the percentage is so high, the fraction 76/79 is often treated as “practically one.” It’s a useful shortcut when you need a quick sense of scale without doing a long division.