How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 11/15100.0*Chance in playoffs100.0*Average seed
Goias 2 Coritiba 1 -2.5
-1.4
Bahia 2 Gama 1 -0.4
Ponte Preta 1 Juventude 0 -0.3
-0.0
Sao Paulo 3 Flamengo 1 -0.3
Atletico-MG 2 Palmeiras 1 +0.3
+0.0
Parana 0 Fluminense 1 -0.2
+0.1
Portuguesa 1 Cruzeiro 3 +0.2
+0.1
Botafogo-SP 2 Vitoria 0 +0.1
+0.2
Vasco da Gama 2 Gremio 0 -0.2
Coritiba 1 Santa Cruz 0 +1.5
Santos 1 Ponte Preta 2 +0.1
Vitoria 1 Goias 0 -0.2
Palmeiras 1 Vasco da Gama 3 -0.2
Cruzeiro 1 Sao Paulo 4 +0.1
Internacional 3 Santos 0 +0.1
Fluminense 0 Portuguesa 0 -0.0
Gama 4 Atletico-PR 1 -0.2
Sao Caetano 2 Guarani 0 +0.1
Botafogo 2 Corinthians 4 -0.0
Guarani 1 Parana 0 -0.0
Juventude 1 Botafogo 3 -0.0
Week of 11/24100.0*Chance in playoffs100.0*Average seed
Bahia 1 Coritiba 1 -0.3
Portuguesa 2 Botafogo 1 -0.2
Fluminense 2 Santos 1 +0.1
Week of 12/1100.0*Chance in playoffs100.0*Average seed
Coritiba 1 Ponte Preta 2 -1.2
Parana 3 Goias 1 -0.5
Guarani 1 Santa Cruz 2 +0.3
Corinthians 1 Fluminense 2 +0.3
Vitoria 2 Atletico-PR 4 +0.2
Gremio 3 Portuguesa 1 +0.2
Santos 2 Vasco da Gama 2 -0.0
Points
Chance Will Make Playoffs