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
Boa Esporte 1 Joinville 0 +20.9
+1.1
Sampaio Correa 3 Boa Esporte 0 -14.0
-0.6
ABC 1 Ceara 0 +4.6
+0.2
Bragantino 2 Santa Cruz 1 +3.8
+0.1
America-MG 3 Avai 0 +3.2
+0.0
Luverdense 1 America-MG 2 -2.5
-0.2
Atletico-GO 1 Bragantino 0 -2.1
-0.1
Ceara 2 Vasco da Gama 0 -1.7
-0.1
Santa Cruz 0 Sampaio Correa 2 +1.6
+0.1
Avai 2 Portuguesa 0 -1.5
-0.1
Vasco da Gama 3 Vila Nova 1 -0.3
-0.0
Oeste 2 Nautico 0 +0.0
Week of 11/21None
Week of 11/29100.0*Serie A100.0*Average seed
Icasa 3 Boa Esporte 2 -38.8
-1.3
Atletico-GO 2 Santa Cruz 3 +4.2
+0.4
Avai 1 Vasco da Gama 0 -3.3
-0.2
America-MG 4 Sampaio Correa 0 -3.3
-0.2
Luverdense 1 Ceara 0 +0.1
+0.1
Points
Chance Will Win Championship