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
Serbia 2 Montenegro 1 +35.3
+35.3
+2.0
Montenegro 0 Romania 1 -15.5
-15.5
-0.3
Serbia 4 Lithuania 1 In
Yes
+0.9
Romania 3 Lithuania 0 -5.2
-5.2
-0.2
Hungary 2 Finland 0 +0.5
Bulgaria 1 Slovenia 1 +0.1
Cyprus 0 Norway 2 -0.1
Albania 0 Scotland 4 -0.0
Scotland 3 Israel 2 -0.0
Points
Chance Will Make Playoffs