The Poseidon Swim Company produces swim trunks. The average selling price for one of their swim trunks is $82.11. The variable cost per unit is $18.78, Poseidon Swim has average fixed costs per year of $8,539. Assume that current level of sales is 309 units. What will be the resulting percentage change in EBIT if they expect units sold to changes by -0.8 percent? (You should calculate the degree of operating leverage first). (Write the percentage sign in the "units" box). Round the answer to two decimal places