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 -0.6
-0.7
Parana 4 Atletico-MG 1 +0.2
+1.4
Ponte Preta 2 Portuguesa 1 +0.1
Gama 1 Coritiba 1 +0.0
Portuguesa 2 Flamengo 3 +0.1
Gremio 2 Sport Recife 1 -0.1
Botafogo-SP 2 Internacional 1 +0.0
Week of 10/30100.0*Chance in playoffs100.0*Average seed
Parana 1 Sao Paulo 2 Out
-0.7
Parana 1 Internacional 0 +1.3
Gremio 0 Corinthians 3 +0.1
Botafogo 3 Gama 1 +0.1
Cruzeiro 2 Botafogo-SP 1 +0.0
Santos 2 Gremio 1 -0.0
Week of 11/7100.0*Chance in playoffs100.0*Average seed
Cruzeiro 5 Parana 2 -0.6
Portuguesa 2 Parana 2 -0.4
Botafogo 1 Guarani 0 -0.4
Internacional 1 Palmeiras 0 -0.4
Gama 2 Portuguesa 1 -0.2
Atletico-MG 2 Gremio 0 +0.2
Flamengo 0 Santos 1 -0.2
Vasco da Gama 1 Botafogo-SP 1 +0.0
Ponte Preta 0 Gama 0 -0.0
Points
Chance Will Make Playoffs