70/80 as a percentage is 87.50%. This fraction simplifies to seven‑tenths, which is a convenient way to see how close it is to a full whole.
Seeing the number as a percent makes it easier to compare with other values. For example, if a test score is 87.50%, it shows the student got most of the points but missed a small portion.
The result is rounded to two decimal places, so the figure is precise enough for most everyday uses. Rounding keeps the number simple without losing important detail.
In everyday language, saying “about 88%” is often acceptable, but the exact figure 87.50% gives a clear picture of the fraction’s size.