https://www.bigcatcountry.com/2017/12/29/16830496/shad-khan-on-jaguars-home-playoff-game-sellout-our-fans-came-through-just-as-i-knew-they-would
Those percentages are from after Khan found a few ways to get extra seats for the game. It is entirely possible some of the previous tickets from are being resold, but if you think its going to be a Bills home game you are going to be disappointed.