Quote Originally Posted by Unregistered View Post
It should still contribute about 90%, and does in my game. Are you sure you didn't put a girl in the chair that had a much lower multiplier than the others?
Yes, I keep the same hiring order all the time, and seat 11 has the highest multiplier. I haven't totally ignored the other multiplier decorations (got them to 26 to unlock the last evolution of the decorations), but the three that apply to my highest multiplier girls are 49 levels higher than all the others.

Since posting my other comment, seat 11 has reached 40% of total income once I purchased all available levels and upgrades (prioritizing seat 11 first, as usual). Maybe it's an effect of my relatively low overall stats since I still consider myself new to the game (54 days), but I still don't think it should be that much of a difference, just a matter of scale.