8/66 as a percentage is 12.12%. This rounded figure gives a quick sense of how large the fraction is compared to a whole.
The fraction 8/66 can be simplified to 4/33, which still represents the same part of a whole. Even in its reduced form, the proportion stays the same, so the percentage remains 12.12%.
Percentages like this are useful for everyday calculations—whether you're looking at a discount, a test score, or a portion of a recipe. Seeing the number as a percent makes it easier to compare with other values that are also expressed this way.
In short, whenever you need to communicate the size of 8/66 in a familiar format, just use 12.12%. It's a clear, concise way to convey the information.