The fraction 21/45 is equal to 46.67% when converted to a percentage and rounded to two decimal places. This means that 21 out of 45 parts represent just under half of the total. It's a bit less than 50%, which would be exactly half.
In everyday situations, you might come across this fraction or percentage in various contexts. For example, if 21 out of 45 students in a class passed a test, you could say that 46.67% of the class succeeded. Or if you completed 21 out of 45 tasks on your to-do list, you've finished 46.67% of your work. This percentage is useful for quickly understanding how much of something is being represented by the fraction.