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 +4.1
-4.1
+0.4
Madureira 2 Portuguesa 1 -1.0
+1.0
-0.1
Cabofriense 0 Flamengo 1 +0.7
-0.7
+0.2
Resende 1 Friburguense 1 +0.5
-0.5
+0.0
Madureira 1 Macae 0 -0.3
+0.3
-0.0
Bangu 1 Volta Redonda 1 +0.1
-0.1
+0.0
Boavista 1 Volta Redonda 1 +0.0
Botafogo 2 Fluminense 0 -0.1
Botafogo 2 Cabofriense 1 -0.1
Week of 2/27100.0*Chance in playoffs100.0*Grupo D100.0*Average seed
Bangu 1 Madureira 0 +0.0
Flamengo 5 Resende 0 In
No
+0.1
Vasco da Gama 1 Botafogo 1 +0.0
Week of 3/5100.0*Chance in playoffs100.0*Grupo D100.0*Average seed
Boavista 0 Botafogo 1 -0.3
Flamengo 3 Bangu 1 +0.1
Points
Chance Will Make Playoffs