How are these numbers calculated?

Big Games

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

Week of 3/18100.0*Chance in playoffs100.0*Average seed
Fluminense 1 Nova Iguacu 3 -0.1
-0.3
Resende 0 Flamengo 1 -0.1
Week of 3/22100.0*Chance in playoffs100.0*Average seed
Botafogo 2 Fluminense 3 In
+0.1
Flamengo 2 Vasco da Gama 2 +0.1
Flamengo 3 Bangu 0 -0.1
Fluminense 3 Macae 0 +0.0
Week of 3/29100.0*Chance in playoffs100.0*Average seed
Fluminense 1 Flamengo 1 -0.3
Volta Redonda 1 Flamengo 1 +0.2
Madureira 2 Fluminense 2 -0.2
Points
Chance Will Make Playoffs