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*Seletiva100.0*Average seed
Volta Redonda 3 Madureira 2 -18.9
-0.7
Fluminense 1 Nova Iguacu 3 -8.2
-0.2
Vasco da Gama 0 Botafogo 0 +2.3
+0.1
Resende 0 Flamengo 1 +0.5
+0.0
Bangu 0 Boavista 0 +0.5
Portuguesa 2 Macae 1 -0.1
Week of 3/22100.0*Chance in playoffs100.0*Seletiva100.0*Average seed
Vasco da Gama 1 Madureira 0 -21.1
+0.1
-0.8
Portuguesa 2 Madureira 0 -18.4
+0.7
-1.2
Volta Redonda 2 Nova Iguacu 1 +4.0
+0.1
-0.0
Nova Iguacu 0 Portuguesa 0 +3.1
+0.1
Botafogo 2 Fluminense 3 +2.2
+0.1
Boavista 1 Volta Redonda 0 +1.8
+0.1
+0.1
Bangu 0 Botafogo 2 -1.4
-0.4
-0.1
Flamengo 2 Vasco da Gama 2 -0.5
-0.0
Macae 1 Resende 2 -0.5
+0.1
-0.1
Resende 0 Boavista 1 +0.3
+0.6
-0.0
Flamengo 3 Bangu 0 +0.1
+0.0
Week of 3/29100.0*Chance in playoffs100.0*Seletiva100.0*Average seed
Madureira 2 Fluminense 2 -1.4
-1.2
+0.4
Resende 0 Nova Iguacu 1 -0.9
-0.8
-0.0
Portuguesa 1 Botafogo 4 Out
+0.0
Vasco da Gama 1 Boavista 0 Out
+0.2
Volta Redonda 1 Flamengo 1 -0.0
Madureira 3 Bangu 1 +0.7
Macae 2 Volta Redonda 2 +0.3
Bangu 2 Macae 0 -0.1
Boavista 1 Portuguesa 1 +0.1
Points
Chance Will Make Playoffs