Week 11 was a bit higher, but NFL has lost over 200,000 fans in the seats per week (and I'm comparing that to 2017-2019 numbers to account for Covid lockdowns as well as Kaepernick boycotts).
In 2019, the Detroit Pistons averaged 78.5% attendance rate.
This season, they're averaging 66.1% attendance rate.
In 2019, 22 NBA teams averaged 90% or higher attendance rate.
This season, only 8 teams are at 100% and only 14 teams are at 90% or higher attendance rate.
Only 5 NFL teams hit 100% attendance in Week 10.
https://www.sportsbusinessjournal.com/Daily/Morning-Buzz/2021/11/15/NFL-Attendance.aspx
Week 11 was a bit higher, but NFL has lost over 200,000 fans in the seats per week (and I'm comparing that to 2017-2019 numbers to account for Covid lockdowns as well as Kaepernick boycotts).
https://www.pro-football-reference.com/years/2021/attendance.htm
NBA-
In 2019, the Detroit Pistons averaged 78.5% attendance rate. This season, they're averaging 66.1% attendance rate.
In 2019, 22 NBA teams averaged 90% or higher attendance rate. This season, only 8 teams are at 100% and only 14 teams are at 90% or higher attendance rate.
http://www.espn.com/nba/attendance