Create two formula fields, for example, the integer and decimal parts.
The formula for allpart is trunc ({yourfieldnamehere}), and the formula for decimalpart is {yourfieldnamehere} is trunc ({yourfieldnamehere))
The value you get in the decimal part will be a decimal fraction; if you know that this will always be a two-digit decimal, multiply by 100. If it is a variable, you can do a quick string conversion, count the numbers and multiply by the corresponding power of 10.
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