How are these numbers calculated?

Big Games

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

Week of 4/23100.0*Chance wins title100.0*Premier League100.0*Average seed
Brighton & Hove 0 Bristol City 1 Yes
+0.4
Cardiff City 0 Newcastle United 2 +10.6
+0.1
Newcastle United 4 Preston North End 1 +4.6
Yes
+0.1
Norwich City 2 Brighton & Hove 0 +1.7
Huddersfield Town 1 Fulham 4 +2.9
Nottingham Forest 3 Reading 2 +1.5
Week of 5/7100.0*Chance wins title100.0*Premier League100.0*Average seed
Newcastle United 3 Barnsley 0 +31.3
+0.3
Aston Villa 1 Brighton & Hove 1 +2.4
+0.0
Points
Chance Will Win Championship