How are these numbers calculated?

Big Games

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

Week of 5/23100.0*Chance in playoffs100.0*Average seed
Corinthians 1 Fluminense 0 -2.6
-0.2
Paysandu 3 Sao Paulo 0 +1.0
+0.2
Week of 5/24100.0*Chance in playoffs100.0*Average seed
Guarani 0 Atletico-MG 1 -25.6
-1.5
Flamengo 3 Goias 1 -3.0
-0.3
Palmeiras 1 Atletico-PR 0 -0.7
-0.0
Bahia 0 Santos 2 -0.6
-0.3
Fluminense 1 Cruzeiro 1 +0.6
+0.1
Internacional 0 Sport Recife 0 +0.6
+0.1
Cruzeiro 1 Portuguesa 1 -0.3
+0.1
Botafogo 0 Bragantino 2 -0.1
Week of 5/31100.0*Chance in playoffs100.0*Average seed
Guarani 2 Botafogo 1 In
+3.2
Sao Paulo 2 Nautico 0 -0.3
Atletico-MG 0 Paysandu 0 +0.2
Atletico-PR 0 Corinthians 1 -0.2
Sport Recife 0 Palmeiras 2 -0.2
Vasco da Gama 0 Santos 0 +0.1
Flamengo 2 Internacional 0 -0.1
Games Above .500
Chance Will Make Playoffs