143/715 = 20%
A value like 143/715 can show up when 143 out of 715 people, items, or survey responses fit into a certain group. For example, about 20% of students might choose a particular lunch option, or one-fifth of a store’s products might be on sale.
You can picture 20% as about one part out of every five equal parts. A quick estimate is to imagine dividing a group into five roughly equal sections and shading one section.
A common mistake is thinking 20% means 20 items instead of 20 out of every 100, or about one-fifth of the whole group. The actual number of items depends on the total, so the same percentage can represent very different amounts.