16/20 = 80%
A value like 16/20, or 80%, shows up in everyday situations such as a test score, a full battery, or a store discount. For example, getting 16 questions right out of 20 means you answered most of the test correctly.
You can picture 16/20 as four-fifths of a whole, with only one-fifth left over. A quick estimate is that it is close to 75% but clearly higher, making it easy to think of as “about eight out of every ten.”
A common mistake is to confuse 80% with 80 percentage points or to think it means 80 out of 100 items were completed in every situation. It simply describes a proportion, so the total number of items can change while the same fraction remains.