43/78 as a percentage is 55.13%. This means that if you split something into 78 equal parts and take 43 of those parts, you have taken about a little more than half of the whole.
The fraction 43/78 can also be thought of as 43 pieces out of a total of 78 pieces. When you compare those two numbers, you see that the part you have is a little more than one‑half of the total. That’s why the percentage is just above 50%.
Knowing this percentage is handy in everyday situations. For example, if a class has 78 students and 43 of them passed a test, you can say that 55.13% of the class passed. It gives a quick, easy‑to‑understand picture of the result.