The official FINRA number is 78.64%, and that's the number(from what I gather) considered most accurate.
I'm still waiting for a link to your FINRA short interest data. But as far as what number would be most accurate I would assume it would be the NYSE number, since that is the actual exchange that GME is traded on. (FINRA doesn't cover all of the activity as we have learned with TSLA.) For TSLA we use the NASDAQ short interest data, as that is the exchange TSLA is traded on.
Some of the public sites have now updated the GME 1/29 short interest number for example: GME Short Interest Ratio (GameStop)
Which shows ~42%, ~21M shares, short interest that matches what I reported earlier.