Calculate percentage of total for each category in SAS

[xliu1]

I have a table in SAS like the one in screen shot. I need to add one more column to show the percentage of sub-total for each category. For example, class_type='1-LOWER UG' and Campus='1-TPA', the percentage (using CY column) would be 7368/42008 = 17.5%; class_type='2-UPPER UG' and Campus='1-TPA', the percentage (using CY column) would be 22801/42008 = 54.3%.... Is there a simple way to do this? Will appreciate any help! Thanks!

[Reeza]

How did you originally calculate your stats?
If you used PROC MEANS you have the ability to specify the levels of results, including sub groups so backing up and changing something in your prior process is the most efficient solution most likely.

[PaigeMiller]

Please provide data as SAS data step code, following these instructions. This needs to be done 100% of the time, so we actually have data that we can work with. Screen captures are not acceptable and not usable in developing code.