16/66 as a percentage is 24.24%. This number tells you how much of a whole the fraction represents when you look at it on a scale of 100.
The fraction 16/66 can be reduced to 8/33, which still gives the same percentage. Seeing it as a percentage makes it easier to compare with other values, like test scores or discount rates.
In everyday use, you might round 24.24% to 24% for quick estimates, but the precise figure is helpful when exact calculations matter, such as budgeting or data analysis.