The fraction 66/80 is equal to 82.50% when converted to a percentage and rounded to the nearest two decimal places. This percentage represents how much of a whole the fraction represents. In other words, if you had 80 equal parts and took 66 of them, you'd have 82.50% of the total.
To put this into perspective, 82.50% is more than three-quarters but less than seven-eighths of a whole. It's a fairly high percentage, indicating that the fraction represents a significant portion of the total. In everyday situations, you might encounter this percentage in various contexts, such as test scores, sales discounts, or progress towards a goal.