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 -18.1
-1.1
Botafogo 0 Santa Cruz 3 -7.0
-0.2
Vitoria 1 Ceara 0 -3.8
-0.1
Boa Esporte 3 Bahia 0 +1.6
+0.1
Nautico 1 CRB 1 +1.2
+0.0
Paysandu 3 Luverdense 2 -0.4
-0.1
Parana 1 America-MG 0 +0.2
Week of 11/20100.0*Serie A100.0*Average seed
CRB 2 Sampaio Correa 1 No
-1.0
Mogi Mirim 0 Santa Cruz 3 No
Nautico 1 Bahia 0 -1.0
-0.1
Parana 0 Bragantino 2 -1.0
-0.2
Paysandu 1 Criciuma 0 -0.2
Week of 11/27100.0*Serie A100.0*Average seed
Bahia 1 Atletico-GO 0 -0.4
Sampaio Correa 1 Parana 1 -0.2
Oeste 0 Paysandu 0 -0.1
Criciuma 2 CRB 1 +0.1
Points
Chance Will Win Championship