How are these numbers calculated?

Big Games

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

Week of 11/24100.0*Libertadores100.0*Average seed
Internacional 2 Palmeiras 1 -26.2
-1.0
Sport Recife 1 Cruzeiro 0 +9.0
+0.3
Flamengo 2 Atletico-PR 0 -6.2
-0.2
Parana 2 Santos 3 -2.7
-0.2
America-RN 0 Gremio 3 -1.2
-0.1
Fluminense 3 Juventude 2 -1.2
-0.1
Sao Paulo 2 Botafogo 2 +0.1
+0.0
Week of 12/2100.0*Libertadores100.0*Average seed
Palmeiras 1 Atletico-MG 3 -42.8
-1.2
Santos 2 Fluminense 4 -4.7
-0.3
Cruzeiro 2 America-RN 0 -4.7
-0.2
Gremio 1 Corinthians 1 +2.9
+0.0
Nautico 1 Flamengo 0 +0.2
Points
Chance Will Win Championship