here is my dataframe
I would like to fid the % of each row
a b c
1 NA 10 10
2 NA 11 13
3 NA 20 12
4 NA 20 20
5 NA 3 15
6 10 2 8
first I sum the first row 10+10=20 so the % of the first row is 50% for b and 50% for c It should looks like this
a b c
1 NA 0.5 0.5
2 NA 0.458 0.542
3 NA 0.625 0.372
4 NA 0.5 0.5
5 NA 0.166 0.834
6 0.5 0.1 0.4
Thanks