A company that produces men’s cologne had been advertising the product in general-circulation magazines for several years.
Given that ...
The men's cologne company switched from advertising in a general-circulation magazine to advertising in a predominantly male-read magazine.
Why is it that ...
They started selling fewer bottles of cologne than they had in any of the three preceding years?
Goal
Let's find something about switching to this sports magazine with primarily male readership that led to selling fewer bottles of cologne, or find something that happened at the same time as the switch that led to selling fewer bottles of cologne.