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*Serie A100.0*Average seed
Bragantino 2 Santa Cruz 1 -9.6
-0.9
Santa Cruz 0 Sampaio Correa 2 -6.8
-1.2
Sampaio Correa 3 Boa Esporte 0 +3.0
+0.0
ABC 1 Ceara 0 +2.4
+0.1
Boa Esporte 1 Joinville 0 -2.1
-0.2
America-MG 3 Avai 0 +1.7
-0.0
Luverdense 1 America-MG 2 -1.4
-0.2
Atletico-GO 1 Bragantino 0 -1.4
-0.2
Avai 2 Portuguesa 0 -1.3
-0.2
Ceara 2 Vasco da Gama 0 -0.9
-0.1
Vasco da Gama 3 Vila Nova 1 -0.4
Oeste 2 Nautico 0 +0.1
+0.1
Nautico 1 Luverdense 0 -0.0
Week of 11/21100.0*Serie A100.0*Average seed
America-RN 1 Nautico 0 +0.1
Bragantino 1 Parana 1 +0.0
Week of 11/29100.0*Serie A100.0*Average seed
Atletico-GO 2 Santa Cruz 3 +0.4
America-MG 4 Sampaio Correa 0 +0.3
Nautico 1 Ponte Preta 1 +0.1
Points
Chance Will Win Championship