How are these numbers calculated?

Big Games

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

Week of 1/10100.0*Chance in playoffs100.0*Average seed
Grenoble 15 SF Paris 9 -5.8
-0.1
Week of 1/17100.0*Chance in playoffs100.0*Average seed
SF Paris 39 L Welsh 17 Yes
+0.2
Games Above .500
Chance Will Make Playoffs