24/55 as a percentage is 43.64%. This number tells you how much of a whole 24 parts out of 55 represent when you think in terms of 100 parts.
The fraction 24/55 can be seen in everyday situations, like when you have 24 apples out of a total of 55 fruits. Saying it as a percentage (43.64%) makes it easier to compare with other amounts that are also expressed out of 100.
Remember that percentages are just another way to show fractions. So whenever you see 43.64%, you can instantly think of the original fraction 24/55 and understand the size of that part relative to the whole.