I'd suggest looking to Stephen Few's blog post about 100% stacked bars (https://www.perceptualedge.com/blog/?p=2239) as he's got a nice illustration about how this might look if a given category were centered at 0%. Without seeing your data it's tricky to specifically outline how to do what you're looking for, but regarding the labeling there's a lot of little adjustments that can be made. One thing that I found helped me was hitting the Label button on the Marks card, selecting Marks to Label -> Min/Max, Scope->Cell, Field->(here I selected the dimension that by bars were broken down into), and deselected the option for Label Minimum Value. This gave me a dimension labeling for the specific category I was interested in. Maybe something like this could help you too?
Thanks Vincent! I checked the link you gave. It's very cool! I followed the detailed instructions on this link .Likert Scales — The Final Word? – Data Revelations . The link you gave covers more bar graphing techniques. Thanks again.