How are these numbers calculated?

Big Games

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

Week of 11/6100.0*Chance wins title100.0*Average seed
Avai 1 Coritiba 0 -6.8
-0.1
Portuguesa 6 Barueri 2 -3.1
Gama 0 Ipatinga 2 -1.6
Paulista 3 Vitoria 0 +1.0
Week of 11/13100.0*Chance wins title100.0*Average seed
Coritiba 2 Portuguesa 0 +15.5
+0.2
Ipatinga 1 Sao Caetano 0 -14.7
-0.1
Ipatinga 3 Marilia 2 -6.3
-0.1
Coritiba 2 Marilia 3 -4.0
Vitoria 4 CRB 1 -0.5
Week of 11/24100.0*Chance wins title100.0*Average seed
Paulista 2 Ipatinga 5 -40.7
-0.4
Santa Cruz 2 Coritiba 3 Yes
+0.2
Points
Chance Will Win Championship