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
Vitoria 2 Parana 0 +18.4
+1.3
Parana 4 Atletico-MG 1 +2.8
+0.2
Portuguesa 2 Flamengo 3 -2.2
-0.1
Coritiba 2 Palmeiras 1 +2.1
+0.1
Flamengo 0 Cruzeiro 2 +1.6
+0.0
Ponte Preta 2 Portuguesa 1 -1.1
-0.1
Gama 1 Coritiba 1 +0.6
+0.1
Juventude 2 Vasco da Gama 1 +0.4
+0.1
Week of 10/30100.0*Chance in playoffs100.0*Average seed
Guarani 1 Vitoria 2 +18.7
+1.7
Corinthians 0 Atletico-MG 4 -4.0
-0.2
Parana 1 Sao Paulo 2 -1.6
-0.1
Vasco da Gama 2 Atletico-PR 1 +1.4
-0.0
Sao Paulo 1 Ponte Preta 0 +0.3
+0.0
Palmeiras 0 Guarani 0 +0.2
+0.1
Cruzeiro 2 Botafogo-SP 1 -0.1
-0.1
Santos 2 Gremio 1 -0.1
Cruzeiro 2 Vasco da Gama 1 +0.0
Week of 11/7100.0*Chance in playoffs100.0*Average seed
Sport Recife 1 Vitoria 1 In
-0.6
Flamengo 0 Santos 1 +1.1
+0.1
Corinthians 1 Ponte Preta 2 -0.9
-0.3
Coritiba 1 Juventude 1 +0.3
Vitoria 0 Sao Paulo 3 -1.5
Botafogo 1 Guarani 0 +0.4
Vasco da Gama 1 Botafogo-SP 1 +0.2
Ponte Preta 0 Gama 0 +0.1
Cruzeiro 5 Parana 2 -0.0
Points
Chance Will Make Playoffs