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
Ponte Preta 2 Portuguesa 1 +9.1
+1.0
Vitoria 2 Parana 0 -1.3
-0.1
Parana 4 Atletico-MG 1 +0.9
+0.1
Flamengo 0 Cruzeiro 2 +0.9
-0.0
Portuguesa 2 Flamengo 3 -0.7
Coritiba 2 Palmeiras 1 +0.6
+0.1
Gama 1 Coritiba 1 +0.5
Juventude 2 Vasco da Gama 1 +0.3
+0.2
Atletico-PR 2 Corinthians 2 +0.0
Week of 10/30100.0*Chance in playoffs100.0*Average seed
Sao Paulo 1 Ponte Preta 0 -14.0
-1.4
Palmeiras 0 Guarani 0 +1.7
+0.1
Corinthians 0 Atletico-MG 4 -1.2
Vasco da Gama 2 Atletico-PR 1 +0.6
-0.1
Parana 1 Sao Paulo 2 -0.5
-0.1
Guarani 1 Vitoria 2 -0.2
-0.0
Cruzeiro 2 Botafogo-SP 1 -0.1
Cruzeiro 2 Vasco da Gama 1 +0.0
Week of 11/7100.0*Chance in playoffs100.0*Average seed
Corinthians 1 Ponte Preta 2 In
+2.0
Flamengo 0 Santos 1 +2.0
+0.2
Coritiba 1 Juventude 1 +1.1
+0.0
Ponte Preta 0 Gama 0 -0.3
Botafogo 1 Guarani 0 +0.3
Vasco da Gama 1 Botafogo-SP 1 +0.3
Sport Recife 1 Vitoria 1 +0.1
Vitoria 0 Sao Paulo 3 +0.1
Points
Chance Will Make Playoffs