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
Portuguesa 2 Macae 1 +0.3
-21.2
+0.8
Fluminense 1 Nova Iguacu 3 -0.1
+0.1
Volta Redonda 3 Madureira 2 +1.6
-0.1
Resende 0 Flamengo 1 -0.7
+0.0
Bangu 0 Boavista 0 -0.8
Week of 3/22100.0*Chance in playoffs100.0*Seletiva100.0*Average seed
Portuguesa 2 Madureira 0 +0.8
-26.9
+1.0
Resende 0 Boavista 1 +0.6
-1.6
+0.1
Bangu 0 Botafogo 2 -0.5
-5.7
+0.0
Nova Iguacu 0 Portuguesa 0 -0.3
-1.9
Flamengo 2 Vasco da Gama 2 -0.3
Boavista 1 Volta Redonda 0 +0.1
+5.6
-0.1
Botafogo 2 Fluminense 3 +0.1
Volta Redonda 2 Nova Iguacu 1 +0.1
+1.1
-0.1
Macae 1 Resende 2 +2.5
-0.1
Flamengo 3 Bangu 0 -1.2
+0.0
Fluminense 3 Macae 0 -0.1
Week of 3/29100.0*Chance in playoffs100.0*Seletiva100.0*Average seed
Resende 0 Nova Iguacu 1 -0.8
-4.2
+0.2
Volta Redonda 1 Flamengo 1 -0.3
-0.1
Portuguesa 1 Botafogo 4 Out
+4.9
-0.5
Vasco da Gama 1 Boavista 0 Out
+0.1
Madureira 2 Fluminense 2 -0.1
+0.1
-0.1
Botafogo 3 Resende 2 No
+0.3
Boavista 1 Portuguesa 1 -8.7
-0.3
Madureira 3 Bangu 1 -6.5
+0.2
Bangu 2 Macae 0 +5.6
-0.2
Points
Chance Will Make Playoffs