How are these numbers calculated?

Big Games

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

Week of 11/15100.0*Chance in playoffs100.0*Average seed
Gremio 1 Sao Caetano 2 -0.1
-0.6
America-MG 1 Bahia 2 -0.1
-0.1
Santos 1 Ponte Preta 2 -0.1
Cruzeiro 1 Sao Paulo 4 -0.1
-0.1
Flamengo 1 Internacional 2 -0.1
Vasco da Gama 2 Gremio 0 -0.4
Fluminense 0 Portuguesa 0 +0.0
Atletico-MG 2 Palmeiras 1 -0.1
Sao Caetano 2 Guarani 0 -0.1
Corinthians 2 Atletico-MG 2 +0.1
Week of 11/24100.0*Chance in playoffs100.0*Average seed
Atletico-MG 2 Gremio 0 -1.6
-1.1
Ponte Preta 2 Sport Recife 1 -1.2
-0.1
Fluminense 2 Santos 1 -0.6
-0.2
Vasco da Gama 7 Sao Paulo 1 +0.5
+0.2
Internacional 0 Corinthians 2 +0.4
+0.2
Bahia 1 Coritiba 1 +0.2
+0.1
Week of 12/1100.0*Chance in playoffs100.0*Average seed
Sport Recife 0 Bahia 1 -3.0
-0.3
Sao Paulo 3 Atletico-MG 0 -3.0
-0.4
Cruzeiro 4 Internacional 2 In
+0.3
Gremio 3 Portuguesa 1 In
+1.3
Coritiba 1 Ponte Preta 2 -1.3
-0.3
Corinthians 1 Fluminense 2 -0.1
-0.3
Points
Chance Will Make Playoffs