Attal Corporation manufactures numerous products, one of which is called Epsilon05. The company has provided the following data about this product: Unit sales (a) Selling price per unit Variable cost per unit Contribution margin per unit (b) 29.00 Total contribution margin (a) x (b) $2,610,000 Traceable fixed expense Net operating income 90,000 $72.00 43.00 2,370,000 240,000 Assume that the total traceable fixed expense does not change. If Attal increases the price of EpsilonOS to $75.60, what percentage change in unit sales would provide the same net operating income as is currently being earned at a price of $72.00? (Your answer should be rounded to the nearest 0.1%.)