How are these numbers calculated?

Big Games

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

Week of 3/31100.0*Chance in playoffs100.0*Average seed
Fluminense 1 Botafogo 1 -4.8
-0.2
Macae 1 Vasco da Gama 4 +4.4
+0.1
Flamengo 2 Bangu 1 -2.6
-0.1
Resende 2 Americano 1 -1.5
Week of 4/7100.0*Chance in playoffs100.0*Average seed
Botafogo 3 Friburguense 1 +9.7
+0.2
Volta Redonda 1 Resende 1 +8.2
+0.1
Bangu 1 Macae 0 +6.8
+0.1
Vasco da Gama 1 Flamengo 2 -3.3
-0.3
Week of 4/15100.0*Chance in playoffs100.0*Average seed
Boavista 1 Botafogo 1 -0.3
Flamengo 3 Americano 1 -0.3
Points
Chance Will Make Playoffs