The fraction 17/80 is equal to 21.25% when converted to a percentage. This means that if you had 80 equal parts of something and took 17 of those parts, you'd have 21.25% of the whole. It's a bit more than one-fifth of the total, which would be 20%.
In everyday life, you might come across this fraction or percentage in various situations. For example, if 17 out of 80 students in a school wore glasses, you could say that 21.25% of the student body wears glasses. Or if you completed 17 pages of an 80-page book, you'd have read 21.25% of the book. This fraction and its percentage equivalent can be useful for understanding parts of a whole in many different contexts.