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*Seletiva100.0*Average seed
Bangu 1 Portuguesa 1 +0.0
Week of 3/7100.0*Seletiva100.0*Average seed
Madureira 0 Cabofriense 2 +24.6
-0.9
Portuguesa 2 Nova Iguacu 1 -4.3
+0.1
Fluminense 2 Nova Iguacu 1 -4.0
+0.1
Macae 1 Volta Redonda 1 -3.1
+0.1
Volta Redonda 1 Botafogo 1 -1.9
+0.1
Week of 3/17100.0*Seletiva100.0*Average seed
Volta Redonda 2 Boavista 3 No
+0.4
Bangu 0 Madureira 3 -19.9
+0.7
Nova Iguacu 0 Macae 2 -7.5
+0.1
Points
Chance Will Make Playoffs