The fraction 9/21 is equal to 42.86% when converted to a percentage. This means that if you had 21 items and took 9 of them, you'd have about 43% of the total. It's a bit less than half, which would be 50%.
In everyday life, you might see this fraction or percentage used in various situations. For example, if 9 out of 21 students in a class wore glasses, you could say that 42.86% of the class wears glasses. Or if a sports team won 9 games out of 21 played in a season, their win rate would be 42.86%. It's a handy way to express parts of a whole in a format that's easy to understand and compare.
