How are these numbers calculated?

Big Games

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

Week of 3/26100.0*Chance in playoffs100.0*Serie A2100.0*Average seed
Oeste 1 Audax 3 +18.2
No
+0.4
Ferroviaria 2 Oeste 0 -7.9
-0.1
Santos 4 Ferroviaria 1 +4.7
+0.1
Botafogo 1 Audax 1 -3.2
-0.1
Sao Bento 1 XV de Piracicaba 0 +1.0
+0.0
XV de Piracicaba 1 Botafogo 1 +0.5
Linense 1 Sao Paulo 1 +0.4
+0.0
Santos 1 Sao Paulo 1 -0.3
+0.0
Linense 5 Capivariano 0 +0.2
Week of 4/2100.0*Chance in playoffs100.0*Serie A2100.0*Average seed
Audax 2 Sao Bento 1 In
+0.3
Sao Paulo 2 Oeste 1 -2.1
-0.2
Week of 4/10100.0*Chance in playoffs100.0*Serie A2100.0*Average seed
Sao Bento 1 Sao Paulo 0 +0.2
Santos 2 Audax 1 -0.1
Points
Chance Will Make Playoffs