How are these numbers calculated?

Big Games

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

Week of 4/14100.0*Chance in playoffs100.0*Average seed
Caracas 1 Everton 0 +18.0
+0.3
Chivas Guadalajara 0 Lanus 0 +8.1
+0.2
Week of 4/21None
Week of 4/28100.0*Chance in playoffs100.0*Average seed
Lanus 1 Caracas 1 -0.3
Everton 1 Chivas Guadalajara 1 +0.1
Points
Chance Will Make Playoffs