How are these numbers calculated?

Big Games

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

Week of 10/24100.0*Chance in playoffs100.0*Average seed
Cruzeiro 3 Palmeiras 1 +20.3
+2.0
Vasco da Gama 3 Coritiba 1 -3.9
-0.2
Vasco da Gama 0 Vitoria 1 +1.3
-0.1
Gremio 2 America-RN 1 -1.2
-0.1
Flamengo 2 Guarani 1 -1.2
-0.1
America-MG 2 Atletico-PR 1 +0.4
+0.2
Coritiba 1 Atletico-MG 1 -0.3
-0.0
Portuguesa 1 Internacional 1 -0.2
-0.0
Sport Recife 2 Botafogo 1 -0.1
+0.1
Goias 2 Juventude 2 +0.0
Sao Paulo 1 Corinthians 2 +0.1
Week of 10/31100.0*Chance in playoffs100.0*Average seed
Atletico-PR 1 Cruzeiro 2 +28.7
+1.4
Atletico-MG 1 Sport Recife 0 -8.4
-0.3
Guarani 1 Gremio 3 -4.8
-0.2
Flamengo 2 America-MG 0 -4.1
-0.2
Internacional 0 Botafogo 0 +3.1
+0.1
Vitoria 2 Corinthians 3 +1.5
+0.1
Portuguesa 3 Bragantino 1 -0.1
-0.0
Week of 11/7100.0*Chance in playoffs100.0*Average seed
Cruzeiro 5 Juventude 0 In
+1.1
Palmeiras 2 Vasco da Gama 1 +8.5
+0.2
Gremio 4 Portuguesa 2 -5.8
-0.3
Parana 2 Flamengo 1 +5.5
+0.3
Ponte Preta 0 Atletico-MG 0 -2.5
+0.1
Coritiba 1 Internacional 0 +2.4
+0.2
Goias 2 Vasco da Gama 2 +2.0
+0.0
Points
Chance Will Make Playoffs