How are these numbers calculated?

Big Games

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

Week of 11/26100.0*Libertadores100.0*Average seed
Botafogo 1 Ponte Preta 1 -6.6
-0.1
Corinthians 0 Atletico-PR 0 +4.9
+0.2
Week of 12/4100.0*Libertadores100.0*Average seed
Cruzeiro 3 Corinthians 2 Yes
+0.3
Gremio 0 Botafogo 1 Yes
+0.6
Atletico-PR 0 Flamengo 0 -4.5
Points
Chance Will Win Championship