How are these numbers calculated?

Big Games

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

Week of 4/22100.0*Promoted100.0*Average seed
Berwick 0 Montrose 1 +4.7
+0.4
Elgin City 2 Stirling Albion 2 +1.5
+0.1
Edinburgh City 2 Annan Athletic 0 +1.4
+0.1
Week of 4/29100.0*Promoted100.0*Average seed
Annan Athletic 5 Montrose 1 -7.0
-0.6
Arbroath 3 Elgin City 2 +3.6
+0.2
Edinburgh City 1 Stirling Albion 0 +0.1
Week of 5/6100.0*Promoted100.0*Average seed
Montrose 1 Clyde 1 -3.1
-0.1
Elgin City 0 Cowdenbeath 0 +1.5
+0.1
Points
Chance Will Win Championship