re: 10, 20, 30, More...What percent of your football stadium's seats are chairbacks?

I don't know enough about the different skybox setup a to give you a correct answer but we have a 132 of them so there is probably more than a few chairbacks in that number. The south endzone has 7,300 chairbacks in it and there are 8,950 club seats in the stadium. So that takes us to at minimum 16,250 chairback seats or 22.5% of the stadium. I'm guessing you would be near 30% when you factor in the skyboxes.

The expansion next year will add around 6-7k additional chairback seats.