Row percent based on row total in a matrix

Hi 

I need some help..

I have a table

Date(Bins)    Type A        Type B        Type C       RowTotal (I created this measure adding the row)

Jan 2016         30              276              342               648

Feb 2016         24             269              307               600

Mar 2016        41             332              286               659

I need to be able to add columns Type A % of RowTotal

Type B % of Row Total

Type C % of Row Total 

and display that in 3 columns for each of the months or rows like shown above

Anyhelp? Thanks in advance