How are these numbers calculated?

Lottery

We are out of the playoffs. Here are the big games and what ifs for draft seeds.
Although it might be more fun to go down swinging.

Big Games

Week of 11/19100.0*Lottery seed
Winston 81.7 Christian 108.9 -0.8
Brett 113.3 Spencer 90 +0.2
Will 110 Lee 71.7 +0.1
Dave 117.8 Clay 66.4 +0.1
Week of 11/26100.0*Lottery seed
Christian 91.3 Will 122.4 +0.5
Alex 120.7 Brett 116.2 -0.2
Lee 79.8 Dave 80.3 +0.1
Winston 80.5 Dane 107.9 -0.1
If winner is:HomeAway
Week of 12/3100.0*Lottery seed
Dane vs Brett-0.3+0.2
Dave vs Christian+0.2-0.2

What If

100100100100100100100100100100100100
If finish:Chance will finish season at seed
TWW-L123456789101112
41-05050
30-1100
Total:2575
Games Above .500
Chance Will Make Playoffs