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
Corinthians 0 Atletico-PR 0 -12.4
-0.2
Botafogo 1 Ponte Preta 1 +4.8
+0.2
Week of 12/11100.0*Libertadores100.0*Average seed
Cruzeiro 3 Corinthians 2 No
-0.7
Gremio 0 Botafogo 1 -8.9
-0.1
Atletico-PR 0 Flamengo 0 +5.4
+0.1
Points
Chance Will Win Championship