30/66 as a percentage is 45.45%. This is the rounded value you get when you compare the fraction to a whole.
The fraction 30/66 can be reduced to 5/11, which shows the same relationship in simpler terms. Both forms represent a little less than one half of a whole.
Knowing that 45.45% is the percent form helps when you need to compare it to other percentages, such as test scores or sales data, without having to work with the original fraction.
