How are these numbers calculated?

Big Games

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

Week of 10/23100.0*Chance in playoffs100.0*Average seed
Flamengo 0 Cruzeiro 2 +10.6
+1.4
Vitoria 2 Parana 0 -1.2
-0.1
Ponte Preta 2 Portuguesa 1 -0.8
-0.2
Gama 1 Coritiba 1 +0.6
+0.0
Portuguesa 2 Flamengo 3 -0.6
Parana 4 Atletico-MG 1 +0.5
+0.1
Atletico-PR 2 Corinthians 2 +0.4
+0.0
Coritiba 2 Palmeiras 1 +0.2
+0.1
Juventude 2 Vasco da Gama 1 +0.2
+0.1
Week of 10/30100.0*Chance in playoffs100.0*Average seed
Cruzeiro 2 Botafogo-SP 1 +3.1
+1.0
Corinthians 0 Atletico-MG 4 -0.8
Vasco da Gama 2 Atletico-PR 1 +0.7
-0.1
Parana 1 Sao Paulo 2 -0.5
-0.1
Santos 2 Gremio 1 -0.2
Guarani 1 Vitoria 2 -0.1
-0.0
Palmeiras 0 Guarani 0 In
Cruzeiro 2 Vasco da Gama 1 In
+0.9
Sao Paulo 1 Ponte Preta 0 -0.0
Gremio 0 Corinthians 3 -0.1
Week of 11/7100.0*Chance in playoffs100.0*Average seed
Corinthians 3 Coritiba 2 -0.3
Cruzeiro 5 Parana 2 +0.2
Corinthians 1 Ponte Preta 2 +0.1
Santos 3 Cruzeiro 3 +0.1
Sport Recife 1 Vitoria 1 +0.0
Points
Chance Will Make Playoffs