How are these numbers calculated?

Big Games

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

Week of 4/18100.0*Promoted100.0*Average seed
Annan Athletic 2 East Fife 1 -4.5
-0.4
Montrose 2 Elgin City 1 +3.4
+0.2
Week of 4/25100.0*Promoted100.0*Average seed
Berwick 0 East Fife 3 +5.8
+0.5
Elgin City 4 Annan Athletic 5 -0.1
-0.1
Week of 5/2100.0*Promoted100.0*Average seed
East Fife 3 Elgin City 1 +1.9
+0.2
Annan Athletic 4 Montrose 3 -1.8
-0.1
Arbroath 5 Berwick 0 -0.1
Points
Chance Will Win Championship