How are these numbers calculated?

Big Games

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

Week of 11/14100.0*Chance wins title100.0*Serie A100.0*Average seed
Ceara 2 Vasco da Gama 0 No
-2.2
-0.1
Vasco da Gama 3 Vila Nova 1 +2.2
+0.1
Boa Esporte 1 Joinville 0 -0.8
ABC 1 Ceara 0 +0.7
+0.0
Sampaio Correa 3 Boa Esporte 0 +0.6
+0.0
America-MG 3 Avai 0 +0.6
+0.0
Avai 2 Portuguesa 0 -0.4
Atletico-GO 1 Bragantino 0 -0.4
Bragantino 2 Santa Cruz 1 +0.4
Luverdense 1 America-MG 2 -0.3
Santa Cruz 0 Sampaio Correa 2 +0.2
Week of 11/21None
Week of 11/29None
Points
Chance Will Win Championship