40/81 as a percentage is 49.38%. This fraction is just a way to write a number that is a little less than one half. When you see it in a report or a chart, the rounded percentage makes it easier to understand at a glance.
The fraction 40/81 is a proper fraction because the numerator (40) is smaller than the denominator (81). It can be simplified no further, so the exact value stays the same. In decimal form it repeats, giving a value close to 0.4938, which is why the rounded percentage is used.
Using the rounded 49.38% is handy in everyday situations, like estimating scores, interest rates, or portions. It gives a clear picture without needing a calculator, and the rounding to two decimal places keeps it both precise and readable.
