How are these numbers calculated?

Big Games

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

Week of 4/13100.0*Chance wins title100.0*Promoted100.0*Average seed
Southampton 1 Reading 3 -39.7
-3.0
-0.4
Peterborough 1 Southampton 3 +13.6
+8.0
+0.2
Reading 1 Nottm Forest 0 -9.0
-0.4
-0.1
Bristol City 1 West Ham 1 +0.5
+5.2
+0.1
West Ham 6 Brighton 0 -0.2
-3.5
-0.0
Week of 4/21100.0*Chance wins title100.0*Promoted100.0*Average seed
Middlesbrough 2 Southampton 1 -18.2
-2.7
-0.2
Reading 2 Crystal Palace 2 +5.9
+0.1
Leicester 1 West Ham 2 -5.9
-0.1
Week of 4/28100.0*Chance wins title100.0*Promoted100.0*Average seed
Southampton 4 Coventry 0 Yes
+0.1
West Ham 2 Hull 1 -6.5
-0.1
Points
Chance Will Win Championship