How are these numbers calculated?

Big Games

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

Week of 11/7100.0*Chance in playoffs100.0*Average seed
Gremio 3 Santos 0 +2.0
+0.8
Sao Paulo 2 Gremio 1 -1.0
-0.8
Goias 4 Juventude 1 -0.3
Guarani 0 Portuguesa 1 -0.3
+0.1
Santos 1 Vitoria 0 +0.3
Sport Recife 0 Corinthians 0 +0.2
+0.1
Atletico-MG 5 Vasco da Gama 1 -0.1
-0.1
Internacional 2 Parana 1 -0.1
Criciuma 2 Palmeiras 1 +0.2
Fluminense 2 Atletico-PR 3 -0.1
Botafogo 0 Cruzeiro 0 +0.1
Week of 11/14100.0*Chance in playoffs100.0*Average seed
Gremio 0 Coritiba 2 -1.0
Portuguesa 1 Internacional 2 +0.1
Cruzeiro 3 Sport Recife 1 -0.2
Vitoria 0 Guarani 1 -0.1
Palmeiras 2 Atletico-MG 0 -0.1
Cruzeiro 0 Coritiba 0 +0.1
Santos 3 Atletico-PR 2 +0.2
Week of 11/21100.0*Chance in playoffs100.0*Average seed
Gremio 1 Goias 3 -1.1
Atletico-PR 1 Criciuma 2 +0.2
Atletico-MG 3 Atletico-PR 2 -0.2
Palmeiras 4 Sport Recife 1 -0.2
Juventude 1 Atletico-MG 0 +0.2
Vasco da Gama 0 Guarani 2 -0.2
Cruzeiro 2 Santos 1 -0.1
Sao Paulo 1 Cruzeiro 0 +0.1
Points
Chance Will Make Playoffs