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
Atletico-MG 2 Palmeiras 1 +0.8
+0.5
Bahia 2 Gama 1 -0.2
Ponte Preta 1 Juventude 0 -0.2
Parana 0 Fluminense 1 -0.2
-0.1
Sao Paulo 3 Flamengo 1 -0.1
-0.1
Goias 2 Coritiba 1 -0.1
Internacional 3 Santos 0 -0.1
-0.1
Portuguesa 1 Cruzeiro 3 +0.1
Flamengo 1 Internacional 0 +0.1
Corinthians 2 Atletico-MG 2 -0.2
Cruzeiro 1 Sao Paulo 4 -0.1
Fluminense 0 Portuguesa 0 +0.1
Vasco da Gama 2 Gremio 0 +0.2
Gama 4 Atletico-PR 1 +0.1
Gremio 1 Sao Caetano 2 +0.1
Sao Caetano 2 Guarani 0 -0.0
Week of 11/24100.0*Chance in playoffs100.0*Average seed
Fluminense 2 Santos 1 -0.1
-0.1
Bahia 1 Coritiba 1 In
+0.0
Week of 12/1100.0*Chance in playoffs100.0*Average seed
Sao Paulo 3 Atletico-MG 0 -0.4
Vitoria 2 Atletico-PR 4 -0.3
Corinthians 1 Fluminense 2 -0.3
Points
Chance Will Make Playoffs