40/41 as a percentage is 97.56%. This number tells you that the fraction is just a little bit less than a whole, or 100 %.
The fraction 40/41 means you have 40 parts out of a total of 41 equal parts. Because the denominator is only one more than the numerator, the value is very close to 1. In everyday language, you could say it’s “almost all” of something.
People use this kind of fraction when they need to show a tiny shortfall, like a test score of 40 correct answers out of 41 questions, or a project that’s 97.56 % complete. It’s a handy way to communicate that something is nearly finished without being perfect.