I'll post here some statistics I've got in another forum:
Atualizado | Actualizado | Updated
Ranking de público até o momento (+1.9 milhão)
Ranking de público hasta el momento (+1.9 million)
Attendance ranking so far (+1.9 million)
24-Jun-2014 | 15h BRT
NOTES:
I. The source of these figures is fifa.com. All are official FIFA numbers.
II. The Occupancy that is here shown is based on the availible seat (according to the # of tkt FIFA placed for sale in each venue, not in the venue capacity). All venues are bigger than and have room for about 3.000 to 5.000 more seats, however FIFA decreased the capacity to make room for the press stands, VIP and invited areas, gratuity areas, etc.
III. The public is not restricted to remain seated all times. It is normal for the public to stand at the panoramic hallways, look for friends seating in other areas of the stadia, stand in bars and restaurants inside the stadia, etc.
IV. According to Fifa they scan every ticket from regular fans to VIP fans, so they believe their attendance figures are foolproof. This also confirms that Fifa report people in the stadium as opposed to paid attendance.