If I decide to withdraw my whole amount of $91,000 since I'm losing money, how much in taxes will I owe? It was a tax deferred account that has been rolled over. I'm 67 years old.

All the withdrawal will be treated as your regular income. You may not be subject to early withdrawal penalty of 10% as you are over 55. Read Your U.S. Tax Return: Elective Deferrals 401(k) Plans

Thanks for your help, but I still don't know how much money we're talking about. I live in KY. Do you have any idea how much I would lose to taxes?

To accurately answer the question one would need to know what your filing status is and what your total taxable income would be. The taxes would be very different if the distribution is your only income as compared to your income before the distribution being $75,000 or $100,00 as you then could be in a higher bracket.

You need to clarify your question here. You said it " was a tax deferred account that has been rolled over". Do you mean you rolled it over into an IRA or from one company's plan to another or what?

As for the account losing money, that is NOT a reason to withdraw. Whether the money is in a 401K or IRA, you may be able to change the investment vehicle without cashing out. Certainly in an IRA you have the choice of investments. So if its in a 401K plan that has limited investment choices you can roll it over into an IRA.

The main point here is I see no reason to incur a tax hit by withdrawing the entire amount.