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
Atletico-PR 2 Corinthians 2 -6.8
-0.5
Portuguesa 2 Flamengo 3 -3.6
-0.2
Vitoria 2 Parana 0 -3.1
-0.2
Parana 4 Atletico-MG 1 +3.0
+0.1
Ponte Preta 2 Portuguesa 1 -2.0
-0.1
Coritiba 2 Palmeiras 1 +1.8
+0.0
Flamengo 0 Cruzeiro 2 +1.4
+0.0
Gama 1 Coritiba 1 +1.3
+0.1
Juventude 2 Vasco da Gama 1 +0.3
+0.1
Week of 10/30100.0*Chance in playoffs100.0*Average seed
Vasco da Gama 2 Atletico-PR 1 -22.1
-1.4
Corinthians 0 Atletico-MG 4 -3.5
-0.2
Parana 1 Sao Paulo 2 -3.0
-0.2
Palmeiras 0 Guarani 0 +2.6
+0.1
Guarani 1 Vitoria 2 -1.7
-0.1
Sao Paulo 1 Ponte Preta 0 +1.5
Santos 2 Gremio 1 -0.7
-0.1
Cruzeiro 2 Botafogo-SP 1 -0.4
-0.1
Botafogo 3 Gama 1 +0.1
+0.0
Week of 11/7100.0*Chance in playoffs100.0*Average seed
Internacional 1 Palmeiras 0 +2.9
+0.2
Atletico-PR 3 Sport Recife 1 +2.9
+1.6
Atletico-MG 2 Gremio 0 Out
-0.2
Corinthians 1 Ponte Preta 2 -1.1
-0.1
Santos 3 Cruzeiro 3 +1.1
+0.1
Juventude 3 Flamengo 1 +1.1
+0.1
Corinthians 3 Coritiba 2 +1.1
+0.3
Flamengo 0 Santos 1 +0.5
-0.2
Coritiba 1 Juventude 1 -0.2
-0.1
Ponte Preta 0 Gama 0 +0.1
Cruzeiro 5 Parana 2 +0.1
Gama 2 Portuguesa 1 -0.1
Points
Chance Will Make Playoffs