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*Serie A100.0*Average seed
Portuguesa 1 Duque de Caxias 1 -3.8
-0.1
Ipatinga 1 Atletico-GO 0 +1.3
Figueirense 2 Bragantino 1 -0.4
-0.2
Ceara 2 Guarani 2 -0.2
Week of 11/21100.0*Serie A100.0*Average seed
Vasco da Gama 0 Portuguesa 1 +6.7
+0.4
Juventude 1 Atletico-GO 3 -1.7
Figueirense 1 Duque de Caxias 2 +1.5
+0.2
Ponte Preta 1 Ceara 2 -0.6
Week of 11/27100.0*Serie A100.0*Average seed
Sao Caetano 2 Figueirense 1 +0.2
Portuguesa 1 Campinense 1 -0.2
Points
Chance Will Win Championship