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*Serie B100.0*Average seed
Cruzeiro 3 Palmeiras 1 +15.8
*No
+1.7
Vasco da Gama 3 Coritiba 1 -3.4
-0.2
Gremio 2 America-RN 1 -1.8
-0.2
Vasco da Gama 0 Vitoria 1 +1.1
-0.1
Flamengo 2 Guarani 1 -0.8
-0.1
America-MG 2 Atletico-PR 1 +0.4
+0.1
Coritiba 1 Atletico-MG 1 +0.3
Portuguesa 1 Internacional 1 +0.2
Sport Recife 2 Botafogo 1 -0.1
+0.1
Goias 2 Juventude 2 *No
+0.0
Sao Paulo 1 Corinthians 2 +0.1
Bragantino 1 Juventude 0 +0.0
Week of 10/31100.0*Chance in playoffs100.0*Serie B100.0*Average seed
Atletico-PR 1 Cruzeiro 2 +28.2
+1.5
Atletico-MG 1 Sport Recife 0 -7.4
-0.2
Guarani 1 Gremio 3 -5.1
-0.2
Flamengo 2 America-MG 0 -3.9
-0.2
Internacional 0 Botafogo 0 +1.9
+0.1
Vitoria 2 Corinthians 3 +1.7
+0.2
Portuguesa 3 Bragantino 1 -0.1
Week of 11/7100.0*Chance in playoffs100.0*Serie B100.0*Average seed
Cruzeiro 5 Juventude 0 In
+1.4
Palmeiras 2 Vasco da Gama 1 +7.8
+0.3
Gremio 4 Portuguesa 2 -7.3
-0.4
Parana 2 Flamengo 1 +5.4
+0.3
Coritiba 1 Internacional 0 +4.5
+0.2
Ponte Preta 0 Atletico-MG 0 -3.3
+0.1
Goias 2 Vasco da Gama 2 +0.3
-0.1

* A starred number could be exactly 0 or just really small. The simulation did not run long enough to know.

Points
Chance Will Make Playoffs