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
Parana 0 Fluminense 1 +17.5
+1.3
America-MG 1 Bahia 2 -2.8
-0.2
Bahia 2 Gama 1 -2.5
-0.1
Sao Paulo 3 Flamengo 1 -2.3
-0.2
Ponte Preta 1 Juventude 0 -2.3
-0.1
Atletico-MG 2 Palmeiras 1 +2.0
+0.0
Cruzeiro 1 Sao Paulo 4 -1.5
-0.2
Fluminense 0 Portuguesa 0 +1.5
-0.1
Vitoria 1 Goias 0 +1.4
+0.1
Flamengo 1 Internacional 2 -1.4
-0.2
Portuguesa 1 Cruzeiro 3 +1.3
+0.1
Goias 2 Coritiba 1 -1.2
-0.1
Santos 1 Ponte Preta 2 -1.1
-0.1
Palmeiras 1 Vasco da Gama 3 +0.9
+0.0
Botafogo-SP 2 Vitoria 0 +0.7
+0.0
Internacional 3 Santos 0 -0.2
-0.1
Gremio 1 Sao Caetano 2 +0.1
Week of 11/24100.0*Chance in playoffs100.0*Average seed
Fluminense 2 Santos 1 +18.9
+1.3
Ponte Preta 2 Sport Recife 1 -1.5
-0.2
Vasco da Gama 7 Sao Paulo 1 +0.7
+0.2
Internacional 0 Corinthians 2 +0.6
+0.2
Atletico-MG 2 Gremio 0 +0.4
+0.2
Bahia 1 Coritiba 1 -0.2
Week of 12/1100.0*Chance in playoffs100.0*Average seed
Sport Recife 0 Bahia 1 -1.0
-0.2
Sao Paulo 3 Atletico-MG 0 -1.0
-0.4
Coritiba 1 Ponte Preta 2 -0.7
-0.4
Corinthians 1 Fluminense 2 In
+1.2
Cruzeiro 4 Internacional 2 In
+0.2
Gremio 3 Portuguesa 1 -0.4
-0.3
Points
Chance Will Make Playoffs