Arresting many leaving all-night raves (7)
I believe the answer is:
halting
'arresting many leaving' is the definition.
The answer and definition can be both related to change as well as being present participle verbs.
Perhaps you can see an association between them that I can't see?
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for halting that I've seen before include "Far from fluent" , "interruption?" , "Stopping; lame" , "making slow progress" , "Slow and hesitant, faltering" .)