How are these numbers calculated?

Big Games

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

Week of 7/19100.0*Chance wins title100.0*Promoted100.0*Average seed
Tottenham Hotspur 2 Roma 3 -42.4
-42.4
-1.6
PSG 2 Tottenham Hotspur 4 +24.8
+24.8
+1.8
Real Madrid 1 Manchester United 2 -7.4
-7.4
-0.1
Manchester United 2 Manchester City 0 -1.1
-1.1
-0.1
Juventus 1 Barcelona 2 -0.4
-0.4
-0.0
Roma 1 PSG 2 -0.2
-0.2
Week of 7/26100.0*Chance wins title100.0*Promoted100.0*Average seed
Barcelona 1 Manchester United 0 +2.7
+2.7
+0.1
Manchester City 3 Tottenham Hotspur 0 No
No
-1.9
Real Madrid 2 Barcelona 3 No
No
-0.0
Manchester City 4 Real Madrid 1 +0.1
+0.1
PSG 2 Juventus 3 +0.1
Roma 1 Juventus 2 +0.1
Points
Chance Will Win Championship