70/80 as a percentage is 87.50%.
The fraction 70/80 can be thought of as 70 parts out of 80 equal parts. When you look at it in everyday terms, it means you have 87.5 out of every 100 parts, which is why the percentage is 87.50%.
Knowing this percentage is useful for quick comparisons. For example, if a test score is 70 out of 80, you can say the student earned 87.50%, showing a strong performance without needing to work with the fraction directly.
