With:
B15: 22/11/1980
E15: 27/10/2010
F16: =YEAR(E15)-YEAR(B15) = 30 (formatted as general)
F20: =(E15-B15)-365*F16 = -19 (formatted as general)
Or, you can miss out the intermediate step (F16):
F20: =(E15-B15)-365*(YEAR(E15)-YEAR(B15)) = -19 (formatted as general)
The output cell, F20, can be any cell you choose.
If you can get the basic calculation and display to work, you can substitute alternative values.
You might need to add a fudge factor if you're looking to "adjust" the result (for whatever reason)
Regards
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