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 -17.1
+0.1
-0.7
Fluminense 1 Nova Iguacu 3 -4.6
-0.1
Vasco da Gama 0 Botafogo 0 +2.3
+0.1
Resende 0 Flamengo 1 +0.8
Bangu 0 Boavista 0 +0.8
Portuguesa 2 Macae 1 -0.2
Week of 3/22100.0*Chance in playoffs100.0*Seletiva100.0*Average seed
Vasco da Gama 1 Madureira 0 -21.9
+0.4
-1.0
Portuguesa 2 Madureira 0 -17.2
+1.3
-1.1
Botafogo 2 Fluminense 3 +4.1
-0.1
+0.1
Bangu 0 Botafogo 2 -2.9
-0.7
-0.1
Volta Redonda 2 Nova Iguacu 1 +2.4
+0.2
-0.0
Boavista 1 Volta Redonda 0 +1.8
+0.2
+0.1
Nova Iguacu 0 Portuguesa 0 +1.8
-0.1
+0.1
Macae 1 Resende 2 -0.7
+0.3
-0.1
Flamengo 3 Bangu 0 +0.6
-0.1
+0.1
Flamengo 2 Vasco da Gama 2 -0.3
-0.0
Resende 0 Boavista 1 +0.1
+0.4
-0.0
Week of 3/29100.0*Chance in playoffs100.0*Seletiva100.0*Average seed
Madureira 2 Fluminense 2 -7.5
-0.8
-0.3
Resende 0 Nova Iguacu 1 -2.4
-1.1
-0.1
Volta Redonda 1 Flamengo 1 +1.1
+0.1
Portuguesa 1 Botafogo 4 Out
+0.1
Vasco da Gama 1 Boavista 0 Out
+0.2
Madureira 3 Bangu 1 +1.1
Bangu 2 Macae 0 -0.2
Macae 2 Volta Redonda 2 +0.1
Boavista 1 Portuguesa 1 +0.1
Points
Chance Will Make Playoffs