Lat/Lon coordinates (which is what these appear to be) can be negative on either side and span +/- 0-179.9999999999999 degrees. Your coordinates also appear to be limited to a 15-digit precision, so the more digits you have for the integer part, the less you have for the decimal part. Given those parameters, your wildcard Find/Replace expression should probably be:
Find = ([\-0-9.]{16,17}) ([\-0-9.]{16,17})
Replace = [\2,\1]

Note: I've assumed your coordinates have trailing 0s

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]