78.41% is what you get when you change the fraction 69/88 into a percentage.
The fraction 69/88 means 69 parts out of a total of 88 equal parts. It is a little more than three‑quarters, which is why its percentage is close to 75 %.
When you see 78.41% you can think of it as a way to compare the same amount using a whole of 100 instead of 88. This makes it easier to compare with other numbers that are already in percent form.
In everyday life, percentages like this are useful for things such as grades, discounts, or any situation where you need to see a part of a whole at a glance.
