How are these numbers calculated?

Big Games

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

Week of 1/11100.0*Chance in playoffs100.0*Promoted100.0*Average seed
Saints 18 Castres 12 +6.4
+6.4
+1.1
Ulster 23 Glasgow 6 -6.3
-6.3
-0.5
Quins 47 Connacht 8 +0.2
Ospreys 15 Tigers 15 -0.0
Week of 1/18100.0*Chance in playoffs100.0*Promoted100.0*Average seed
Glasgow 27 Saints 20 Out
No
Games Above .500
Chance Will Make Playoffs