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
Atletico-MG 5 Vasco da Gama 1 +8.9
+1.0
Santos 1 Vitoria 0 +1.4
+0.1
Guarani 0 Portuguesa 1 -1.3
Sport Recife 0 Corinthians 0 +1.0
+0.1
Goias 4 Juventude 1 -0.8
Vasco da Gama 1 Santos 2 +0.8
Coritiba 0 Flamengo 0 +0.7
+0.0
Internacional 2 Parana 1 -0.5
Corinthians 0 Bahia 0 +0.4
Gremio 3 Santos 0 -0.1
-0.1
Sao Paulo 2 Gremio 1 -0.1
+0.1
Criciuma 2 Palmeiras 1 +0.1
Botafogo 0 Cruzeiro 0 +0.0
Fluminense 2 Atletico-PR 3 -0.1
Week of 11/14100.0*Chance in playoffs100.0*Average seed
Palmeiras 2 Atletico-MG 0 -1.4
-1.0
Cruzeiro 3 Sport Recife 1 +0.4
-0.1
Corinthians 1 Goias 1 +0.3
Flamengo 3 Fluminense 1 -0.1
Bragantino 3 Sao Paulo 4 -0.1
Vitoria 0 Guarani 1 -0.1
-0.2
Portuguesa 1 Internacional 2 -0.1
+0.1
Cruzeiro 0 Coritiba 0 +0.1
Gremio 0 Coritiba 2 +0.2
Santos 3 Atletico-PR 2 +0.1
Week of 11/21100.0*Chance in playoffs100.0*Average seed
Atletico-MG 3 Atletico-PR 2 In
+1.4
Sao Paulo 1 Cruzeiro 0 -1.0
Juventude 1 Atletico-MG 0 -1.4
Atletico-PR 1 Criciuma 2 +0.5
Palmeiras 4 Sport Recife 1 -0.4
Vasco da Gama 0 Guarani 2 -0.3
Cruzeiro 2 Santos 1 -0.2
Gremio 1 Goias 3 +0.2
Points
Chance Will Make Playoffs