How are these numbers calculated?

Big Games

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

Week of 11/11100.0*Chance wins title100.0*Serie A100.0*Average seed
Avai 1 Nautico 1 -2.4
-0.8
-0.1
Coritiba 2 Atletico-MG 3 -2.2
+4.0
+0.0
Guarani 1 America-RN 2 -0.2
-2.9
-0.2
Sao Raimundo-AM 3 Santo Andre 2 +0.3
Week of 11/18100.0*Chance wins title100.0*Serie A100.0*Average seed
Nautico 2 Ituano 0 Yes
+0.3
Gama 1 Coritiba 1 +2.9
+0.0
Paulista 9 Paysandu 0 -1.9
America-RN 1 Santo Andre 2 +1.6
+0.3
Week of 11/25100.0*Chance wins title100.0*Serie A100.0*Average seed
Sport Recife 2 Portuguesa 3 +0.2
Atletico-MG 2 America-RN 2 +0.1
Santo Andre 1 Nautico 1 -0.0
Points
Chance Will Win Championship