42/82 as a percentage is 51.22%. This tells you that the fraction is just a little over one‑half when you look at it in terms of a whole.
The fraction 42/82 can be simplified by dividing both numbers by 2, giving 21/41. Even in its reduced form, it still represents a little more than half of a whole, which matches the 51.22% value.
In everyday terms, if you had 82 pieces of something and you took 42 of them, you’d have taken about 51.22% of the total. This makes it easy to compare the fraction to other percentages you might see in reports, grades, or statistics.