40/79 expressed as a percentage is 50.63%. This simple conversion shows that the fraction is just over half when you look at it in terms of percent.
The fraction 40/79 can be thought of as 40 parts out of a total of 79 equal parts. When you compare those parts to a whole, you see that it is a little more than 1⁄2, which is why the percentage is a little above 50 %.
Knowing the percent form makes it easier to compare 40/79 with other numbers that are already in percent, such as test scores or discount rates. It also helps when you need to quickly estimate the size of the fraction in everyday situations.