How are these numbers calculated?

Big Games

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

Week of 11/11100.0*Average seed
Sampaio Correa 1 Londrina 3 -0.1
Atletico-GO 5 Tupi 3 +0.0
Week of 11/18100.0*Average seed
Sampaio Correa 0 Atletico-GO 1 -0.1
Week of 11/25None
Chance Will Win Championship