How are these numbers calculated?

Big Games

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

Week of 10/25100.0*Chance in playoffs100.0*Average seed
Atletico-MG 3 America-RN 2 -13.3
-1.2
Flamengo 1 Vitoria 0 +3.5
+0.1
Santos 3 Bahia 1 -2.6
-0.1
Palmeiras 5 Gremio 1 -2.4
+0.0
Guarani 0 Juventude 0 +1.6
+0.0
Vitoria 1 Cruzeiro 1 +1.2
+0.1
Internacional 4 Flamengo 0 +0.6
Botafogo 0 Parana 0 +0.5
+0.1
Coritiba 0 Atletico-PR 2 +0.1
+0.1
Sao Paulo 7 Uniao Sao Joao 1 -0.1
Week of 11/1100.0*Chance in playoffs100.0*Average seed
America-RN 1 Sao Paulo 3 -9.0
-1.6
Vitoria 2 Santos 0 -5.1
-0.2
Santos 2 America-RN 0 Out
-1.9
Juventude 2 Bragantino 1 -1.3
Cruzeiro 2 Botafogo 3 -1.1
-0.1
Juventude 1 Fluminense 1 +0.9
+0.0
Corinthians 0 Sport Recife 1 -0.2
-0.2
Palmeiras 3 Goias 3 *-0.1
+0.0
Parana 1 Atletico-MG 0 -0.2
Flamengo 1 Coritiba 0 +0.1
Gremio 1 Guarani 4 +0.1
Week of 11/8100.0*Chance in playoffs100.0*Average seed
Coritiba 2 America-RN 0 -2.1
Fluminense 0 Gremio 2 -0.3
Goias 0 Corinthians 2 +0.2
Criciuma 1 Atletico-PR 1 +0.1
Santos 2 Cruzeiro 2 +0.1
Botafogo 3 Portuguesa 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