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
Paysandu 3 Sao Paulo 0 +1.1
Corinthians 1 Fluminense 0 -1.0
+0.1
Week of 5/24100.0*Chance in playoffs100.0*Average seed
Palmeiras 1 Atletico-PR 0 +18.1
+2.0
Fluminense 1 Cruzeiro 1 -4.1
Bahia 0 Santos 2 -3.1
-0.2
Flamengo 3 Goias 1 -1.2
-0.1
Guarani 0 Atletico-MG 1 +1.0
-0.2
Internacional 0 Sport Recife 0 +0.3
+0.1
Cruzeiro 1 Portuguesa 1 +0.2
+0.1
Week of 5/31100.0*Chance in playoffs100.0*Average seed
Sport Recife 0 Palmeiras 2 +37.3
+2.2
Guarani 2 Botafogo 1 -9.4
-0.3
Sao Paulo 2 Nautico 0 -9.4
-0.2
Vasco da Gama 0 Santos 0 -5.2
-0.1
Atletico-PR 0 Corinthians 1 -5.2
-0.1
Flamengo 2 Internacional 0 +3.6
+0.1
Atletico-MG 0 Paysandu 0 +0.2
Games Above .500
Chance Will Make Playoffs