Change from modest shilling (5,3)
I believe the answer is:
plain bob
'change' is the definition.
I know nothing about this answer so I cannot judge whether this works.
'modest shilling' is the wordplay.
'modest' becomes 'plain' (I can't explain this - if you can you should believe this answer much more).
'shilling' becomes 'bob' (I've seen this in another clue).
'plain'+'bob'='PLAIN BOB'
'from' is the link.
Can you help me to learn more?
(Another definition for plain bob that I've seen is " Bell-ringing method".)