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
Fluminense 1 Flamengo 2 +16.2
-16.2
+0.8
Cabofriense 0 Flamengo 1 +6.8
-6.8
+0.6
Madureira 2 Portuguesa 1 -3.8
+3.8
-0.1
Madureira 1 Macae 0 -2.5
+2.5
-0.1
Boavista 1 Volta Redonda 1 +1.6
-1.6
+0.1
Bangu 1 Volta Redonda 1 +1.3
-1.3
+0.1
Resende 1 Friburguense 1 +1.1
-1.1
+0.1
Tigres do Brasil 0 Vasco da Gama 2 +0.7
-0.7
Macae 2 Bonsucesso 2 +0.4
-0.4
America 1 Boavista 1 +0.4
-0.4
+0.0
Vasco da Gama 2 Friburguense 2 +0.4
-0.4
+0.0
Botafogo 2 Cabofriense 1 -0.1
Botafogo 2 Fluminense 0 -0.1
Week of 2/27100.0*Chance in playoffs100.0*Grupo D100.0*Average seed
Portuguesa 0 America 1 -0.2
+0.2
-0.1
Bangu 1 Madureira 0 +0.2
-0.2
+0.1
Flamengo 5 Resende 0 In
No
+0.2
Week of 3/5100.0*Chance in playoffs100.0*Grupo D100.0*Average seed
Boavista 0 Botafogo 1 -0.4
Flamengo 3 Bangu 1 +0.2
Points
Chance Will Make Playoffs