615/621 = ≈99.03%
Rounded to 2 decimal places.
A fraction like 615/621 can describe a very high success rate, such as 615 packages delivered on time out of 621 total packages. That is about 99.03%, meaning nearly every package met the goal.
To picture 615/621 quickly, imagine a group of 621 items with only 6 missing from the successful group. Since the fraction is just a little less than 1, you can estimate it as nearly 100%.
A common mistake is to read 99.03% as exactly 99% or as a perfect score. The small difference matters when the total is large, because even a few missed items can represent real failures or costs.
