How are these numbers calculated?

Big Games

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

Week of 4/30100.0*Average seed
QPR 1 C & K Basildon 4 -0.1
Lewes 0 Coventry Utd 1 -0.1
Week of 5/7100.0*Average seed
C & K Basildon 0 Lewes 2 +0.5
Week of 5/14100.0*Average seed
C & K Basildon 4 Charlton 3 -0.8
Points
Chance Will Win Championship