How are these numbers calculated?

Big Games

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

Week of 11/19100.0*Chance wins title100.0*Libertadores100.0*Average seed
Figueirense 0 Fluminense 4 +6.4
+15.8
+0.8
Corinthians 2 Atletico-MG 1 -3.2
-0.1
Vasco da Gama 2 Avai 0 -1.3
-0.3
-0.1
Atletico-GO 0 Flamengo 0 +1.2
+0.0
Sao Paulo 3 America-MG 1 -0.7
Botafogo 1 Internacional 2 +0.7
+0.0
Coritiba 1 Santos 0 +0.2
Week of 11/27100.0*Chance wins title100.0*Libertadores100.0*Average seed
Figueirense 0 Corinthians 1 No
Yes
Fluminense 1 Vasco da Gama 2 No
-0.8
-0.4
Flamengo 1 Internacional 0 -0.2
Week of 12/4100.0*Chance wins title100.0*Libertadores100.0*Average seed
Botafogo 1 Fluminense 1 +0.1
Vasco da Gama 1 Flamengo 1 +0.1
Points
Chance Will Win Championship