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
Ospreys 15 Tigers 15 -1.5
+0.9
-0.1
Toulouse 35 Treviso 14 -1.0
-0.0
Sharks 6 Montpellier 27 -0.2
Saints 18 Castres 12 +0.1
+0.5
-0.1
Week of 1/18100.0*Chance in playoffs100.0*Promoted100.0*Average seed
Tigers 9 Toulouse 5 In
Yes
+2.6
Glasgow 27 Saints 20 -0.1
Treviso 17 Ospreys 14 -0.1
Games Above .500  (Full Screen)
Chance Will Make Playoffs  (Full Screen)