66/82 as a percentage is 80.49%. This value tells you how much of the whole 82 parts are covered by the 66 parts when expressed in a more familiar form.
The fraction 66/82 can be reduced to 33/41, but the size of the fraction doesn’t change. Whether you write it as 66/82, 33/41, or 80.49%, the proportion stays the same.
In everyday situations, a percentage like 80.49% can help you compare results quickly. For example, if a student gets 66 out of 82 points on a test, you can say they earned about 80.49% of the total possible points.
Remember, the percentage and the original fraction are just two ways to describe the same amount. Use whichever form is most helpful for the audience you’re talking to.