When you turn 42/49 into a percent, you get 85.71%. This is the quick answer to “What is 42/49 as a percentage?” and it’s already rounded to two decimal places.
The fraction 42/49 can be reduced to 6/7, which is a familiar piece of a whole. Seeing it as a percent makes it easier to compare with other numbers that are already expressed in percent form, like test scores or interest rates.
In everyday situations, 85.71% might represent a high score on a quiz, a strong discount, or the portion of a project that’s finished. It’s close enough to 86% that you can round it up for simple estimates, but the precise figure is useful when exactness matters.