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
Resende 0 Flamengo 1 -2.2
+2.4
-0.3
Fluminense 1 Nova Iguacu 3 -0.8
-0.1
Vasco da Gama 0 Botafogo 0 +0.5
Volta Redonda 3 Madureira 2 +0.4
+0.9
-0.1
Bangu 0 Boavista 0 +0.1
-0.3
+0.1
Portuguesa 2 Macae 1 +1.1
-0.0
Week of 3/22100.0*Chance in playoffs100.0*Seletiva100.0*Average seed
Resende 0 Boavista 1 -9.3
+13.5
-1.5
Macae 1 Resende 2 +2.1
-12.7
+0.8
Bangu 0 Botafogo 2 -1.6
-2.6
-0.0
Portuguesa 2 Madureira 0 +1.4
+3.4
Volta Redonda 2 Nova Iguacu 1 +0.9
+0.3
-0.2
Flamengo 2 Vasco da Gama 2 -0.6
-0.0
Nova Iguacu 0 Portuguesa 0 +0.4
+0.4
+0.0
Botafogo 2 Fluminense 3 +0.4
+0.0
Boavista 1 Volta Redonda 0 +0.3
+2.7
-0.0
Flamengo 3 Bangu 0 -0.7
+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 Out
+15.4
-0.8
Madureira 2 Fluminense 2 -0.1
+0.6
-0.1
Volta Redonda 1 Flamengo 1 -0.0
Botafogo 3 Resende 2 Yes
-0.6
Bangu 2 Macae 0 +27.9
-0.3
Madureira 3 Bangu 1 -6.8
+0.2
Boavista 1 Portuguesa 1 +5.6
-0.1
Portuguesa 1 Botafogo 4 -1.9
+0.1
Vasco da Gama 1 Boavista 0 -0.4
Points
Chance Will Make Playoffs