How are these numbers calculated?

Big Games

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

Week of 11/11100.0*Chance wins title100.0*Serie A100.0*Average seed
Atletico-GO 5 Tupi 3 No
Luverdense 2 Bahia 2 No
-2.4
-0.2
Bragantino 1 Vasco da Gama 2 -3.0
-0.2
CRB 0 Paysandu 1 +2.6
+0.1
Sampaio Correa 1 Londrina 3 -1.8
-0.1
Avai 3 Nautico 0 +1.3
-0.1
Ceara 2 Vila Nova 3 +0.5
Week of 11/18100.0*Chance wins title100.0*Serie A100.0*Average seed
Bahia 3 Bragantino 2 +21.5
+0.8
Tupi 1 Nautico 4 -11.4
-0.2
Londrina 0 Avai 1 +2.9
-0.1
Brasil de Pelotas 1 CRB 0 +2.0
+0.0
Criciuma 1 Vasco da Gama 0 +0.8
+0.1
Week of 11/25100.0*Chance wins title100.0*Serie A100.0*Average seed
Atletico-GO 2 Bahia 1 -9.4
-0.6
Vasco da Gama 2 Ceara 1 -8.7
-0.4
Nautico 0 Oeste 2 Yes
+0.1
Avai 1 Brasil de Pelotas 1 +0.1
Points
Chance Will Win Championship