How are these numbers calculated?

Big Games

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

Week of 4/16100.0*Chance wins title100.0*Promoted100.0*Average seed
Burton Albion 2 Rotherham United 0 -9.3
-11.9
-0.3
Rotherham United 1 Ipswich Town 0 +4.5
+12.9
+0.4
Wigan Athletic 1 Cambridge United 2 +3.0
+0.7
Ipswich Town 2 Wigan Athletic 2 +1.4
-0.1
+0.0
Oxford United 1 MK Dons 0 +1.0
+9.2
+0.1
MK Dons 2 Sheffield Wed 3 +0.6
+8.0
+0.1
Plymouth Argyle 0 Sunderland 0 +1.1
Sheffield Wed 1 Crewe Alexandra 0 -0.7
Week of 4/23100.0*Chance wins title100.0*Promoted100.0*Average seed
Portsmouth 3 Wigan Athletic 2 +15.2
+0.8
+0.2
Rotherham United 2 Oxford United 1 +8.9
+16.4
+0.5
Sunderland 1 Rotherham United 1 -6.1
+0.5
Wigan Athletic 1 Plymouth Argyle 1 +0.9
+0.5
MK Dons 2 Morecambe 0 -0.4
-11.1
-0.2
Wycombe Wanderers 1 Sheffield Wed 0 +2.2
+0.1
Sunderland 5 Cambridge United 1 -1.1
-0.1
Week of 4/30100.0*Chance wins title100.0*Promoted100.0*Average seed
Gillingham 0 Rotherham United 2 +38.4
Yes
+0.7
Shrewsbury Town 0 Wigan Athletic 3 No
-0.2
Plymouth Argyle 0 MK Dons 5 -25.8
-0.3
Points
Chance Will Win Championship