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
Edinburgh 17 Munster 26 +22.0
+0.7
Sharks 6 Montpellier 27 -4.7
-0.1
Ulster 23 Glasgow 6 +4.5
+0.1
Saints 18 Castres 12 +4.4
+0.1
Ospreys 15 Tigers 15 +2.4
+0.1
Toulouse 35 Treviso 14 -1.6
-0.0
Week of 1/18100.0*Chance in playoffs100.0*Promoted100.0*Average seed
Tigers 9 Toulouse 5 -37.9
-0.3
Munster 29 Racing Métro 6 +12.4
Yes
+0.8
Saracens 40 Edinburgh 7 -12.2
-0.7
Montpellier 23 Toulon 3 -6.8
-0.1
Biarritz 9 Quins 16 +0.6
Games Above .500
Chance Will Make Playoffs