How are these numbers calculated?

Big Games

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

Week of 11/29100.0*Serie B100.0*Average seed
Cruzeiro 2 Paysandu 1 +2.7
-0.9
Corinthians 1 Bahia 2 +1.1
-0.1
Criciuma 0 Gremio 2 +1.1
Fortaleza 5 Parana 3 +0.9
-0.1
Ponte Preta 1 Sao Paulo 2 -0.6
+0.1
Fluminense 2 Sao Caetano 1 +0.4
-0.2
Juventude 1 Atletico-MG 0 +0.3
-0.2
Vasco da Gama 1 Figueirense 0 -0.2
Vitoria 1 Coritiba 0 -0.1
Week of 12/6100.0*Serie B100.0*Average seed
Guarani 2 Paysandu 1 +14.2
-1.2
Criciuma 3 Bahia 2 -3.6
+0.1
Flamengo 1 Ponte Preta 1 -1.6
+0.1
Santos 2 Gremio 2 -1.5
+0.1
Cruzeiro 5 Fluminense 2 -0.8
+0.2
Fortaleza 2 Coritiba 2 +0.4
+0.0
Juventude 2 Sao Caetano 1 +0.1
-0.2
Week of 12/13100.0*Serie B100.0*Average seed
Paysandu 2 Atletico-PR 2 No
-0.1
Ponte Preta 2 Fortaleza 0 +10.6
-0.1
Gremio 3 Corinthians 0 +10.6
-0.4
Bahia 0 Cruzeiro 7 -6.0
+0.1
Fluminense 1 Juventude 0 -0.3
Points
Chance Will Win Championship