The fraction 16/21 is equal to 76.19% when converted to a percentage. This means that if you had 21 items and took 16 of them, you'd have about three-quarters of the total. It's a bit more than 75%, which is often thought of as three-quarters.
In everyday life, you might see this fraction used in various situations. For example, if 16 out of 21 students passed a test, you could say that 76.19% of the class succeeded. Or if you completed 16 out of 21 tasks on your to-do list, you've finished just over 76% of your work. This percentage is useful for understanding how much of something is present or completed in relation to the whole.