How are these numbers calculated?

Big Games

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

Week of 4/15100.0*Chance in playoffs100.0*Average seed
Lekhwiya 0 Al-Ain 5 In
+0.4
Al-Ittihad 2 Tractor Sazi 0 +2.5
Week of 4/22100.0*Chance in playoffs100.0*Average seed
Al-Ain 1 Al-Ittihad 1 +0.3
Points
Chance Will Make Playoffs