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 Out
-1.8
Paysandu 3 Sao Paulo 0 +0.2
+0.0
Week of 5/24100.0*Chance in playoffs100.0*Average seed
Fluminense 1 Cruzeiro 1 -0.5
Guarani 0 Atletico-MG 1 -0.3
Cruzeiro 1 Portuguesa 1 +0.1
Internacional 0 Sport Recife 0 -0.1
Bahia 0 Santos 2 -0.0
Palmeiras 1 Atletico-PR 0 -0.0
Week of 5/31100.0*Chance in playoffs100.0*Average seed
Sport Recife 0 Palmeiras 2 +0.6
Atletico-PR 0 Corinthians 1 +0.4
Games Above .500
Chance Will Make Playoffs