“What if you work it backward? 138K annual volume. 1000 monthlys at 4 x month = 48k from the 138 K leaves 90K =35%”
“Definitely. If you are already at that point, and work it backward, then absolutely! But if you are currently not doing the monthly pass program, and are thinking about implementing it, then I don't think you can work the math forward like that.”
Working forward requires different assumptions.
Assume conveyor processes 75,000 cars per year, no program.
Start program and 1,000 customer join. So, how many customers constitutes new baseline?
If customers visit an average of four times a year, theoretical customer base is 18,750 unique visitors (75,000 / 4).
(18,750 – 1,000) X 4 = 71,000 + (1,000 X 4 X 12) = 119,000
(119,000 – 71,000) / 119,000 = 40%