22/50 as a percentage is 44.00%. This tells you that the fraction represents a little less than half of a whole. The number is rounded to two decimal places for clarity.
The fraction 22/50 can be thought of as 22 parts out of 50 equal parts. When you look at it on a chart or a pizza cut into 50 slices, you would have 22 slices. Seeing it as 44.00% makes it easier to compare with other percentages.
Using two decimal places is common in reports and school work because it gives a precise look without being too detailed. It lets you see the exact value while still being simple enough to read quickly.