Understanding net changes, go in without finishing (7)
I believe the answer is:
entente
'understanding' is the definition.
(entente is a kind of understanding)
'net changes go in without finishing' is the wordplay.
'changes' indicates anagramming the letters.
'go in' becomes 'enter' ('enter' can be a synonym of 'go in').
'without finishing' means to remove the last letter.
'enter' with its last letter taken away is 'ente'.
'net' anagrammed gives 'ent'.
'ent'+'ente'='ENTENTE'
(Other definitions for entente that I've seen before include "Teen ten involved in friendly understanding between countries" , "Political agreement" , "Friendly agreement between states" , "Informal alliance" , "Harmony" .)