How are these numbers calculated?

Big Games

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

Week of 3/3100.0*Chance in playoffs100.0*Average seed
Bangu 1 Portuguesa 1 +1.6
+0.1
Flamengo 1 Botafogo 0 +0.9
Week of 3/7100.0*Chance in playoffs100.0*Average seed
Boavista 0 Flamengo 3 -19.0
-0.8
Portuguesa 2 Nova Iguacu 1 -7.5
-0.2
Portuguesa 1 Cabofriense 2 +6.2
Vasco da Gama 0 Fluminense 0 +3.1
+0.1
Fluminense 2 Nova Iguacu 1 -3.1
-0.1
Volta Redonda 1 Botafogo 1 -2.3
-0.1
Madureira 0 Cabofriense 2 -0.2
Week of 3/17100.0*Chance in playoffs100.0*Average seed
Botafogo 2 Vasco da Gama 3 Out
-0.2
Flamengo 4 Portuguesa 0 +9.0
+0.3
Volta Redonda 2 Boavista 3 +0.4
Cabofriense 1 Fluminense 1 +0.2
Bangu 0 Madureira 3 +0.1
Points
Chance Will Make Playoffs