How are these numbers calculated?

Big Games

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

Week of 11/15100.0*Chance in playoffs100.0*Promotion100.0*Average seed
Montenegro 0 Romania 1 +15.5
+15.5
+1.6
Serbia 4 Lithuania 1 Out
No
-0.3
Serbia 2 Montenegro 1 -8.8
-8.8
-0.1
Romania 3 Lithuania 0 +6.2
+6.2
+0.7
Greece 0 Estonia 1 +0.2
Cyprus 0 Norway 2 -0.1
Bulgaria 1 Slovenia 1 +0.1
Hungary 2 Finland 0 -0.1
Scotland 3 Israel 2 +0.0
Albania 0 Scotland 4 -0.0
Points
Chance Will Make Playoffs