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
Cruzeiro 1 Sao Paulo 4 +17.5
+0.9
Sao Paulo 3 Flamengo 1 +16.4
+1.0
Santos 1 Ponte Preta 2 -4.8
-0.1
America-MG 1 Bahia 2 -4.1
-0.2
Vitoria 1 Goias 0 +3.1
+0.1
Bahia 2 Gama 1 -3.1
-0.1
Flamengo 1 Internacional 0 +2.7
+0.2
Ponte Preta 1 Juventude 0 -2.6
-0.1
Atletico-MG 2 Palmeiras 1 +2.3
+0.1
Palmeiras 1 Vasco da Gama 3 +1.9
+0.1
Goias 2 Coritiba 1 -1.5
-0.1
Portuguesa 1 Cruzeiro 3 +1.0
+0.1
Botafogo-SP 2 Vitoria 0 +0.6
+0.1
Internacional 3 Santos 0 -0.5
-0.1
Parana 0 Fluminense 1 -0.4
-0.1
Vasco da Gama 2 Gremio 0 -0.1
Gremio 1 Sao Caetano 2 +0.1
Fluminense 0 Portuguesa 0 +0.0
Week of 11/24100.0*Chance in playoffs100.0*Average seed
Vasco da Gama 7 Sao Paulo 1 -9.2
-1.1
Internacional 0 Corinthians 2 +3.7
+0.2
Ponte Preta 2 Sport Recife 1 -2.2
-0.1
Bahia 1 Coritiba 1 +2.1
+0.2
Fluminense 2 Santos 1 -0.1
-0.2
Week of 12/1100.0*Chance in playoffs100.0*Average seed
Cruzeiro 4 Internacional 2 In
+0.2
Sao Paulo 3 Atletico-MG 0 In
+1.2
Sport Recife 0 Bahia 1 -7.5
-0.3
Coritiba 1 Ponte Preta 2 -0.3
Gremio 3 Portuguesa 1 -0.2
Points
Chance Will Make Playoffs