720/900 = 80%
A value like 720/900, or 80%, can show up in everyday life when 80 out of 100 seats at a theater are filled. It could also describe a test score, a phone battery level, or the amount of a project that has been completed.
To picture 80% quickly, imagine a grid of 100 squares with 80 shaded. It is also close to four-fifths, so you can think of something divided into five equal parts with four parts included.
A common mistake is to think 80% means 80 whole items no matter what the total is. The percentage always describes a portion of a larger amount, so 80% of 50 items is different from 80% of 900 items.
