Summarizing data

Hello,

I am new to using Power Bi. Any help would be highly appreciated.

I have the same patient listed several times since every hour we are checking if they are on medication. I have the hospital hours which is basically the difference between the admit and discharge date (in hours). While summarizing the on_med, i need to consider the hosp_hours field only once per patient (its repeating currently). I have shown only 2 patients here for simplicity but i have around 1000 patients in my data.

HAVE

patient            admit_date                      discha_date              on_med        hosp_hrs

pat1      Dec20,2016 4:20pm      Dec21,2016 4:20pm                0                     24                              

pat1     Dec20,2016 4:20pm      Dec21,2016 4:20pm                 1                    24

pat1    Dec20,2016 4:20pm      Dec21,2016 4:20pm                  1                    24

pat1    Dec20,2016 4:20pm      Dec21,2016 4:20pm                  1                    24

pat2      Dec20,2016 4:20pm      Dec21,2016 4:20am                0                     12                              

pat2     Dec20,2016 4:20pm      Dec21,2016 4:20am                 1                    12

WANT

patient           on_med        hosp_hrs     percent_hours

pat1                    3                     24         3/24*100= 12.5% 

pat2                    1                     12         3/24*100= 8.3% 

TOTAL                4                     36          4/36*100=11.11%