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 +2.8
+0.1
Flamengo 1 Botafogo 0 +0.4
Week of 3/7100.0*Chance in playoffs100.0*Average seed
Portuguesa 1 Cabofriense 2 +13.9
+0.2
Boavista 0 Flamengo 3 -13.5
-0.6
Portuguesa 2 Nova Iguacu 1 -6.5
-0.1
Vasco da Gama 0 Fluminense 0 +1.8
+0.1
Volta Redonda 1 Botafogo 1 -0.7
-0.0
Fluminense 2 Nova Iguacu 1 -0.6
-0.0
Week of 3/17100.0*Chance in playoffs100.0*Average seed
Botafogo 2 Vasco da Gama 3 Out
-0.3
Flamengo 4 Portuguesa 0 +7.7
+0.2
Volta Redonda 2 Boavista 3 +0.3
Bangu 0 Madureira 3 +0.2
Cabofriense 1 Fluminense 1 +0.1
Points
Chance Will Make Playoffs