The fraction 42/99 is equal to 42.42% when converted to a percentage and rounded to the nearest two decimal places. This percentage represents how much of a whole the fraction represents. In other words, if you had 99 equal parts of something and took 42 of those parts, you'd have about 42.42% of the total.
To put this into perspective, 42.42% is a little less than half of something. It's closer to half than it is to a third, but not quite as much as 45%. This fraction could be useful in various real-world situations, like calculating discounts, measuring ingredients in cooking, or figuring out how much of a task has been completed.