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*Chance wins title100.0*Serie A100.0*Average seed
Vasco da Gama 2 America-RN 1 No
Figueirense 2 Bragantino 1 -0.7
Portuguesa 1 Duque de Caxias 1 +0.4
Ceara 2 Guarani 2 +0.2
+0.1
Ipatinga 1 Atletico-GO 0 +0.2
+0.2
Week of 11/21100.0*Chance wins title100.0*Serie A100.0*Average seed
Bahia 2 Guarani 0 -1.2
-0.4
Figueirense 1 Duque de Caxias 2 Yes
Juventude 1 Atletico-GO 3 -0.3
-0.1
Ponte Preta 1 Ceara 2 -0.2
-0.1
Week of 11/27100.0*Chance wins title100.0*Serie A100.0*Average seed
Atletico-GO 0 Bahia 3 +0.3
Ceara 0 America-RN 0 +0.2
Guarani 2 Juventude 1 +0.2
Points
Chance Will Win Championship