I'm actually working on it right now, so things will be changing a bit I'm afraid, but it's the column called percentage.
I've just run into the issue of how to treat flags! They're actually saving the community rshares, so should that mean their self-vote percentage is adjusted... bit confused just for the moment!
You just need to filter the flags, then you only have the upvotes and can calculate self-vote ratio or percentage.
I guess I probably will. I was doing that, but then doubted myself since a certain steemit founder seemed to have a surprisingly high self-vote percentage. But haven't really assessed in terms of STEEM/SBD yet as I mentioned.
You can run names by me so i can verify in my database, either here or privately. You can contact me on Discord on several SteemIt related servers or steemit.chat.