How are these numbers calculated?

Big Games

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

Week of 4/19100.0*Relegated100.0*Average seed
Forfar Athletic 0 Arbroath 2 -13.7
+0.2
Airdrieonians 2 East Fife 1 -5.4
+0.1
Stranraer 1 Brechin 2 +0.1
Week of 4/26100.0*Relegated100.0*Average seed
Arbroath 1 Dunfermline 2 +14.6
-0.2
East Fife 1 Brechin 2 -12.6
+0.2
Week of 5/3100.0*Relegated100.0*Average seed
Airdrieonians 2 Arbroath 0 Yes
-0.4
Ayr Utd 4 East Fife 1 -14.4
+0.2
Points
Chance Will Win Championship