Hi @arnab_ece05.
I am not sure this is the best way to do this, but this is how I would do (to do it quickly). 
www-telecomhall-net_excel-formula-to-find-delta-layers.xlsb.zip (7.8 KB)
Tip: please note that, to find text in an Excell cell, the best way is to FIND but also ISNUMBER function.
This is to avoid getting “#VALUE” error - if you try to find using only FIND function, and Excel don’t find it.
Check the attached sample file for details, and ask here if you have any question.
.