How are these numbers calculated?

Big Games

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

Week of 4/16100.0*Promoted100.0*Average seed
Stranraer 4 Dunfermline 1 -5.0
-0.2
Albion Rovers 0 Cowdenbeath 0 -1.7
-0.0
Forfar Athletic 0 Airdrieonians 2 -0.2
-0.1
Stenhousemuir 0 Ayr Utd 4 +0.0
Week of 4/23100.0*Promoted100.0*Average seed
Albion Rovers 3 Forfar Athletic 2 +1.9
+0.3
Brechin 1 Stranraer 0 +1.2
Airdrieonians 3 Dunfermline 0 -0.1
-0.3
Week of 4/30100.0*Promoted100.0*Average seed
Stenhousemuir 1 Albion Rovers 3 +6.3
+0.6
Stranraer 1 Cowdenbeath 0 No
-0.2
Ayr Utd 0 Airdrieonians 3 -3.2
-0.4
Points
Chance Will Win Championship