How are these numbers calculated?

Big Games

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

Week of 11/13100.0*Serie A100.0*Average seed
Bragantino 3 Sampaio Correa 0 -12.4
-0.8
Botafogo 0 Santa Cruz 3 -8.4
-0.2
Nautico 1 CRB 1 +2.2
+0.1
Vitoria 1 Ceara 0 -1.9
-0.1
Boa Esporte 3 Bahia 0 +1.3
+0.2
Paysandu 3 Luverdense 2 -0.2
-0.1
Parana 1 America-MG 0 +0.1
Week of 11/20100.0*Serie A100.0*Average seed
CRB 2 Sampaio Correa 1 No
-0.7
Mogi Mirim 0 Santa Cruz 3 No
Parana 0 Bragantino 2 -0.9
-0.3
Nautico 1 Bahia 0 -0.3
-0.1
Paysandu 1 Criciuma 0 -0.2
Week of 11/27100.0*Serie A100.0*Average seed
Sampaio Correa 1 Parana 1 -0.3
Oeste 0 Paysandu 0 -0.2
Bahia 1 Atletico-GO 0 -0.1
Criciuma 2 CRB 1 +0.1
Points
Chance Will Win Championship