Footwear store changed in the end (4)
I believe the answer is:
shoe
'footwear store' is the definition.
'shoe' can be an answer for 'store' (shoe store is a kind of store). I'm not sure about the 'footwear' bit.
'changed in the end' is the wordplay.
'changed in' becomes 'sho' (I can't justify this - if you can you should give a lot more credence to this answer).
'end' says to take the final letters.
The last letter of 'the' is 'e'.
'sho'+'e'='SHOE'
Can you help me to learn more?
(Other definitions for shoe that I've seen before include "Covering for foot" , "Camera mounting" , "this goes about a foot" , "Last product" , "Plate on horse" .)