How are these numbers calculated?

Big Games

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

Week of 4/7100.0*Promoted100.0*Average seed
Northwich 1 Hednesford Town 2 -5.8
-0.2
FC United 1 Buxton 2 -3.6
-0.4
Ashton United 1 FC United 0 -3.4
-0.3
Hednesford Town 2 Kendal Town 3 +1.7
+0.1
Chasetown 1 Hednesford Town 2 -1.6
-0.1
Marine 0 Burscough 0 +0.3
Chorley 3 Chasetown 2 -0.3
-0.1
Matlock Town 1 Marine 1 +0.2
Kendal Town 1 Chorley 2 -0.1
-0.1
Bradford PA 0 Rushall Olympic 2 +0.1
Burscough 1 Bradford PA 1 +0.0
Week of 4/14100.0*Promoted100.0*Average seed
Matlock Town 2 FC United 1 -5.6
-0.3
FC United 1 Burscough 1 -1.9
-0.1
Bradford PA 3 Frickley 0 -0.0
Week of 4/21100.0*Promoted100.0*Average seed
FC United 4 Northwich 1 +0.1
Hednesford Town 0 Worksop Town 0 -0.1
Points
Chance Will Win Championship