How are these numbers calculated?

Big Games

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

Week of 4/2100.0*Chance in playoffs100.0*Average seed
Vasco da Gama 4 Bangu 0 +25.1
+0.8
Duque de Caxias 0 Flamengo 2 -5.9
-0.2
Macae 2 Boavista 1 +5.8
+0.2
Volta Redonda 1 Fluminense 2 +2.6
+0.1
Americano 0 Olaria 0 +1.5
+0.0
Botafogo 1 Resende 1 +0.8
+0.0
Week of 4/10100.0*Chance in playoffs100.0*Average seed
Botafogo 0 Flamengo 2 -1.8
-0.1
Americano 1 Fluminense 5 In
+0.1
Week of 4/17100.0*Chance in playoffs100.0*Average seed
Flamengo 1 Macae 1 +0.2
Olaria 2 Vasco da Gama 2 -0.1
Points
Chance Will Make Playoffs