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
Nautico 1 CRB 1 -6.6
-0.2
Botafogo 0 Santa Cruz 3 -5.3
-0.2
Vitoria 1 Ceara 0 -3.7
-0.1
Bragantino 3 Sampaio Correa 0 +2.1
Paysandu 3 Luverdense 2 -0.6
-0.1
Boa Esporte 3 Bahia 0 +0.5
+0.1
Week of 11/20100.0*Serie A100.0*Average seed
Nautico 1 Bahia 0 +11.3
+1.1
Mogi Mirim 0 Santa Cruz 3 -4.8
Vitoria 3 Luverdense 0 -1.6
Paysandu 1 Criciuma 0 -0.2
CRB 2 Sampaio Correa 1 +0.2
Parana 0 Bragantino 2 -0.2
Week of 11/27100.0*Serie A100.0*Average seed
Bragantino 0 Nautico 2 +1.0
Oeste 0 Paysandu 0 -0.0
Points
Chance Will Win Championship