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
Fluminense 1 Nova Iguacu 3 -7.2
-0.2
Vasco da Gama 0 Botafogo 0 -5.4
-0.2
Volta Redonda 3 Madureira 2 +3.2
+0.0
Resende 0 Flamengo 1 +0.5
+0.0
Bangu 0 Boavista 0 +0.5
+0.1
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 +22.6
No
+0.9
Flamengo 2 Vasco da Gama 2 +4.8
+0.2
Portuguesa 2 Madureira 0 +4.7
+0.1
Volta Redonda 2 Nova Iguacu 1 +4.2
+0.1
Bangu 0 Botafogo 2 -3.4
-0.1
Nova Iguacu 0 Portuguesa 0 +3.1
-0.0
+0.1
Botafogo 2 Fluminense 3 +2.6
+0.1
Boavista 1 Volta Redonda 0 +1.7
+0.1
Resende 0 Boavista 1 -0.8
-0.0
Macae 1 Resende 2 -0.4
Flamengo 3 Bangu 0 +0.1
-0.0
+0.0
Week of 3/29100.0*Chance in playoffs100.0*Seletiva100.0*Average seed
Nova Iguacu 0 Vasco da Gama 2 In
+0.8
Vasco da Gama 1 Boavista 0 +17.1
+0.6
Botafogo 3 Resende 2 -8.8
-0.2
Resende 0 Nova Iguacu 1 -8.7
-0.2
Portuguesa 1 Botafogo 4 -6.6
-0.2
Madureira 2 Fluminense 2 +0.4
-0.0
Volta Redonda 1 Flamengo 1 -0.3
-0.0
Points
Chance Will Make Playoffs