The suites and club section didn't take out that much seating. Anyway, this is from cyclones.com.
As you can see, adding the permanent end zone bleachers added even more seats to the old configuration. We packed in about 2,300 more fans than previously. I would estimate it even with the seats and club section out at about 46,000 without hillsides.
Wrong.
Before the renovation, capacity was 55,000 including the hillsides, which estimated 2500 per hillside, for a total of 10,000 additional seats. Capacity not including hillsides was 45,000 before renovation. Renovation cost the stadium 2500 seats. Simple mathematics - 45,000 - 2,500 equals 42,500, not 46,000