@Cjross0718,
This is a little confusing. Speaking from seven year old experience in NM, the amount of support ordered is determined by the court, not the child support office, whatever it is called in your state. Income is only one of the factors considered by the court, but the amount
is determined by the court.
Now, as a matter of routine, the order is forwarded to the support office, which garnishees the wages. All that support office can do is determine the amount garnisheed and has nothing to do with the amount ordered. Speaking again of NM, the maximum amount allowed is 50%. It is entirely possible that the amount garnisheed is rather less than 50% of wages less mandatory deductions, so the entire calculation could become moot.