IF(XLOOKUP(MIN((C2:AZ2))*(1-$A$1),C2:BJ2,$C$1:$AZ$1,"",1)<XLOOKUP(MIN((C2:AZ2)),C2:AZ2,$C$1:$AZ$1,"",1),"",XLOOKUP(MIN((C2:BJ2))*(1-$A$1),C2:AZ2,$C$1:$AZ$1,"",1))

I'm sure there is a way of calculating this, but it is beyond my expertise (or lack thereof). I appreciate any help in solving this issue, including a better formula/function to find the relevant cell reference.

Below is a screenshot for better reference. Cell A2 calculation should ignore any 50% target increase reached before the MIN(C2:AZ2) is reached (I2) and only calculate 50% target increase reached after the MIN(C2:AZ2) is reached. The formula should return Q1 (25).

Hope you understand what I am trying to accomplish. Thanks.