looking matching number within same column and highlight them

Hello,

In short I wrote a code that should highlight in yellow all number matching (for example 8,000.00 and (-8,000.56)) regardless of the decimals and the positive/negative sign. For the moment the code is not complete yet but it should at least highlight the same numbers, withing column H.

The code is as follows

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and this is the data in column H:

Numbers
3,064.03
2,435.51
8,037.18
(2,435.50)
599.82
(8,037.00)
10.00
100.00

In this case the code should highlight:
8,037.18
(8,037.00)
2,435.51
(2,435.50)

Thank you for your help