How are these numbers calculated?

Big Games

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

Week of 2/29100.0*Promoted100.0*Average seed
Queens Park 2 Annan Athletic 0 +2.4
+0.3
Albion Rovers 1 Elgin City 2 -0.8
-0.1
Week of 3/7100.0*Promoted100.0*Average seed
Stenhousemuir 0 Queens Park 0 -5.0
-0.3
Elgin City 3 Stirling Albion 1 -2.3
-0.1
Annan Athletic 0 Cowdenbeath 0 +0.7
+0.1
Elgin City 3 Cowdenbeath 2 No
Points
Chance Will Win Championship