How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 2/20100.0*Chance in playoffs100.0*Grupo D100.0*Average seed
Bangu 1 Volta Redonda 1 -3.5
+3.5
-0.3
Resende 1 Friburguense 1 +2.7
-2.7
+0.1
Madureira 2 Portuguesa 1 +2.6
-2.6
+0.1
Portuguesa 3 Bonsucesso 1 -2.1
+2.1
-0.0
Tigres do Brasil 1 Resende 1 +1.9
-1.9
Fluminense 1 Flamengo 2 +1.8
-1.8
+0.1
Macae 2 Bonsucesso 2 +1.4
-1.4
+0.0
Madureira 1 Macae 0 +1.3
-1.3
+0.0
Botafogo 2 Fluminense 0 +1.2
-1.2
+0.1
Botafogo 2 Cabofriense 1 +0.9
-0.9
+0.0
Cabofriense 0 Flamengo 1 +0.8
-0.8
+0.0
Boavista 1 Volta Redonda 1 +0.1
-0.1
+0.1
America 1 Boavista 1 +0.1
Tigres do Brasil 0 Vasco da Gama 2 -0.0
Week of 2/27100.0*Chance in playoffs100.0*Grupo D100.0*Average seed
Bangu 1 Madureira 0 +7.9
-7.9
+0.4
Cabofriense 2 Tigres do Brasil 0 -0.7
+0.7
Portuguesa 0 America 1 In
No
+0.0
Bonsucesso 1 Boavista 2 -0.1
+0.1
-0.2
Friburguense 1 Fluminense 2 -0.1
Week of 3/5100.0*Chance in playoffs100.0*Grupo D100.0*Average seed
Fluminense 1 America 0 -0.6
Flamengo 3 Bangu 1 -0.3
Points
Chance Will Make Playoffs