City financier involved in decreases in value (3,7)

I believe the answer is:

los angeles

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'city' is the definition.
(Los Angeles is an example)

'financier involved in decreases in value' is the wordplay.
'financier' becomes 'angel' (angel can mean an investor).
'involved in' means one lot of letters goes inside another.
'decreases in value' becomes 'loses' (I am not sure about this - if you are sure you should believe this answer much more).
'angel' going within 'loses' is 'LOS ANGELES'.

Can you help me to learn more?

(Other definitions for los angeles that I've seen before include "Second most populous city in the US" , "centre of population" , "Californian city" , "Big city" , "LA, California" .)

I've seen this clue in The Independent.

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