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 12/12100.0*Lottery seed
Oakland 16 Jacksonville 20 -1.4
Detroit 17 Tampa Bay 38 -0.2
Arizona 38 Cleveland 24 +0.1
NY Giants 36 Miami 20 -0.1
Washington 27 Philadelphia 37 -0.1
Dallas 44 LA Rams 21 +0.1
San Francisco 22 Atlanta 29 +0.1
Pittsburgh 10 Buffalo 17 +0.0
LA Chargers 10 Minnesota 39 +0.0
Baltimore 42 NY Jets 21 -0.0
Week of 12/22100.0*Lottery seed
Atlanta 24 Jacksonville 12 +1.0
Seattle 13 Arizona 27 +0.3
NY Jets 16 Pittsburgh 10 +0.3
LA Chargers 17 Oakland 24 -0.2
Indianapolis 38 Carolina 6 -0.1
Miami 38 Cincinnati 35 (ot)+0.1
Tampa Bay 20 Houston 23 -0.1
Tennessee 28 New Orleans 38 +0.1
Chicago 3 Kansas City 26 -0.0
Week of 12/29100.0*Lottery seed
Jacksonville 38 Indianapolis 20 -1.6
New England 24 Miami 27 +0.4
Cincinnati 33 Cleveland 23 -0.1
LA Rams 31 Arizona 24 -0.1
Carolina 10 New Orleans 42 -0.1
Kansas City 31 LA Chargers 21 -0.1
Buffalo 6 NY Jets 13 +0.1
Denver 16 Oakland 15 -0.0
Games Above .500
Chance Will Make Playoffs