How are these numbers calculated?

Big Games

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

Week of 11/22100.0*Serie B100.0*Average seed
Figueirense 2 Vitoria 0 +16.8
-0.7
Coritiba 2 Palmeiras 0 +5.1
-0.1
Chapecoense 2 Botafogo 0 +3.2
-0.1
Bahia 1 Atletico-PR 2 -1.5
+0.1
Week of 11/29100.0*Serie B100.0*Average seed
Flamengo 4 Vitoria 0 +19.3
-0.4
Internacional 3 Palmeiras 1 -6.0
+0.1
Atletico-MG 1 Coritiba 2 +1.7
-0.1
Bahia 1 Gremio 0 -0.2
Santos 2 Botafogo 0 +0.0
Week of 12/6100.0*Serie B100.0*Average seed
Vitoria 0 Santos 1 Yes
-0.3
Palmeiras 1 Atletico-PR 1 -9.8
+0.1
Coritiba 3 Bahia 2 +0.2
Points
Chance Will Win Championship