42/64 as a percentage is 65.63%. This number tells you how much of a whole the fraction represents when you look at it in terms of 100 parts.
The fraction 42/64 can also be simplified to 21/32, but the percentage stays the same. Seeing it as a percent makes it easier to compare with other values, especially when dealing with charts, grades, or budgets.
In everyday use, you might round it to 66% for quick estimates, but the precise rounded figure is 65.63%. This gives you an accurate sense of the proportion without having to work with the fraction directly.
