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
Figueirense 2 Bragantino 1 -4.0
-0.1
Portuguesa 1 Duque de Caxias 1 +1.6
+0.0
Ceara 2 Guarani 2 +1.1
-0.1
Ipatinga 1 Atletico-GO 0 +0.9
+0.2
Week of 11/21100.0*Serie A100.0*Average seed
Ponte Preta 1 Ceara 2 Yes
+0.5
Figueirense 1 Duque de Caxias 2 +4.8
+0.1
Juventude 1 Atletico-GO 3 -3.0
-0.2
Vasco da Gama 0 Portuguesa 1 -1.9
Bahia 2 Guarani 0 +0.2
Week of 11/27100.0*Serie A100.0*Average seed
Guarani 2 Juventude 1 -0.3
Atletico-GO 0 Bahia 3 +0.2
Ceara 0 America-RN 0 -0.1
Points
Chance Will Win Championship