My utah refund said i made a mistake and my refund was $287 less than anticipated, what are my options?

The information you received from the state should have indicated a way for you to dispute/disagree with the state on the changes made on your state tax return.

If it did not then contact the state again to find out the procedure to use when you disagree with their changes.

You may wish to wait for the email to arrive or a letter of explanation. If not, then I would call and insist on what type of adjustment made on your return. You should though receive some type of communication from the state.

While you are waiting for a letter I would check over your state return.  Maybe you can spot that amount or a credit or payment.  Double check the withholding from W2 box 17 or on any 1099 forms got entered right.