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*Serie A100.0*Average seed
Guarani 1 America-RN 2 -3.8
-0.1
Coritiba 2 Atletico-MG 3 +2.2
+0.2
Avai 1 Nautico 1 +0.3
Sao Raimundo-AM 3 Santo Andre 2 +0.2
+0.1
Gama 3 Marilia 0 +0.0
Week of 11/18100.0*Serie A100.0*Average seed
America-RN 1 Santo Andre 2 +4.0
-0.1
Paulista 9 Paysandu 0 +3.0
+0.4
Nautico 2 Ituano 0 -2.5
-0.0
Gama 1 Coritiba 1 +0.3
Marilia 1 Brasiliense 1 +0.0
Week of 11/25100.0*Serie A100.0*Average seed
Brasiliense 3 Paulista 4 +41.0
+0.7
Atletico-MG 2 America-RN 2 No
-0.1
Coritiba 4 Avai 2 -0.2
Points
Chance Will Win Championship