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
Parana 4 Atletico-MG 1 +2.1
+0.1
Portuguesa 2 Flamengo 3 -1.7
-0.1
Vitoria 2 Parana 0 -1.4
-0.1
Coritiba 2 Palmeiras 1 +1.4
+0.1
Flamengo 0 Cruzeiro 2 +1.0
-0.0
Ponte Preta 2 Portuguesa 1 -0.8
-0.1
Gama 1 Coritiba 1 +0.4
Juventude 2 Vasco da Gama 1 +0.3
+0.2
Atletico-PR 2 Corinthians 2 +0.2
+0.0
Week of 10/30100.0*Chance in playoffs100.0*Average seed
Guarani 1 Vitoria 2 -14.4
-1.4
Corinthians 0 Atletico-MG 4 -3.1
-0.2
Palmeiras 0 Guarani 0 -2.9
-0.3
Parana 1 Sao Paulo 2 -1.6
-0.1
Vasco da Gama 2 Atletico-PR 1 +1.1
-0.1
Sao Paulo 1 Ponte Preta 0 +0.3
-0.0
Cruzeiro 2 Botafogo-SP 1 -0.1
-0.1
Week of 11/7100.0*Chance in playoffs100.0*Average seed
Botafogo 1 Guarani 0 -3.8
-1.6
Vitoria 0 Sao Paulo 3 -3.1
+0.0
Atletico-MG 2 Gremio 0 -1.6
-0.1
Flamengo 0 Santos 1 +1.6
+0.1
Internacional 1 Palmeiras 0 In
+0.1
Corinthians 1 Ponte Preta 2 -1.3
-0.4
Coritiba 1 Juventude 1 +0.7
Sport Recife 1 Vitoria 1 -0.3
+0.0
Vasco da Gama 1 Botafogo-SP 1 +0.3
Ponte Preta 0 Gama 0 +0.2
Points
Chance Will Make Playoffs