42/64 as a percentage is 65.63%. This rounded figure gives a quick sense of how much of a whole the fraction represents.
The fraction 42/64 can be simplified to 21/32, which still corresponds to the same 65.63% when expressed as a part of 100. Seeing it in this form makes it easier to compare with other common fractions and percentages.
In everyday use, knowing that 42 out of 64 is about two‑thirds (or 65.63%) helps when estimating scores, success rates, or portions. It’s a handy reference for quick mental checks without needing a calculator.
