what is the best way to design a comparison block

I am very new to UX designing and I am trying to build a comparison block using CSS between two companies.

I have already built a very basic layout about how it should look but its not looking that great. Can any one please try to help me with better UI which suggests the comparison.

Also I need a way to show the subtraction to the user using color codes, right now I am showing it by indicating with letters.

I did try to use for an existing comparision layouts as I tried to develop with my own idea. I have just begun to understand about UX layouts. So I request you guys to help me to imrpove my design and suggest some tips about UX designs.