The deduction amount will not change because of being carried over. The deduction next year will be the full amount that was carried over. However, your charitable deductions next year will still be subject to the same percentage-of-AGI limits. You will have to first deduct any new contributions that you make next year. Then you can deduct the carryover amount. If the total of new contributions plus the carryover exceeds the applicable percentage of AGI, you will have a carryover to the following year.
This is just a broad-brush overview, and omits a lot of details and limitations. See "Carryovers" in IRS Publication 526 for all the details.
