How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 11/13100.0*Average seed
ABC 6 Brasiliense 2 +0.3
Parana 3 Campinense 0 +0.1
Vila Nova 2 Fortaleza 1 +0.1
Week of 11/21100.0*Average seed
Campinense 3 ABC 1 -0.6
Fortaleza 1 Sao Caetano 2 +0.2
Week of 11/27100.0*Average seed
ABC 0 Bragantino 1 -0.5
Portuguesa 1 Campinense 1 +0.1
Parana 1 Fortaleza 1 +0.1
Points
Chance Will Win Championship