Consider a four-year project with the following information: initial fixed asset investment = $575,000; straight-line depreciation to zero over the four-year life; zero salvage value; price = $36; variable costs = $17; fixed costs = $175,000; quantity sold = 84,000 units; tax rate = 34%.

How sensitive is OCF to changes in quantity sold? (Do not round intermediate calculations. Round the final answer to 2 decimal places. Omit $ sign in your response.) (Do not forget to include + or sign)