How are these numbers calculated?

Big Games

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

Week of 3/25100.0*Chance in playoffs100.0*Average seed
Zamora 2 Nacional-PAR 0 -2.5
Week of 4/1100.0*Chance in playoffs100.0*Average seed
Santa Fe 1 Atletico-MG 1 In
+0.0
Week of 4/8100.0*Chance in playoffs100.0*Average seed
Atletico-MG 1 Zamora 0 +0.4
Points
Chance Will Make Playoffs