The fraction 42⁄84 expressed as a percentage is 50.00%.
This fraction can be reduced by dividing both the numerator and the denominator by their greatest common divisor, which is 42. Doing so turns 42⁄84 into the simpler form 1⁄2. A half of any whole is always fifty percent, so the value stays the same after reduction.
Because the result is exactly half, the percentage does not need many digits, but it is shown as 50.00% to match the request for rounding to two decimal places. This format is common in reports and worksheets where a consistent number of decimal places is required.
