How are these numbers calculated?

Big Games

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

Week of 4/3100.0*Chance in playoffs100.0*Average seed
Resende 0 Fluminense 2 +5.7
+0.4
Audax Rio 1 Macae 0 +0.8
Flamengo 1 Duque de Caxias 1 +0.5
Week of 4/10100.0*Chance in playoffs100.0*Average seed
Flamengo 3 Fluminense 1 -0.4
Week of 4/21100.0*Chance in playoffs100.0*Average seed
Boavista 1 Resende 3 -0.3
Fluminense 2 Bangu 0 +0.2
Points
Chance Will Make Playoffs