Required information [The following information applies to the questions displayed below.] Oslo Company prepared the following contribution format income statement based on a sales volume of 1,000 units (the relevant range of production is 500 units to 1,500 units): 3. Using the degree of operating leverage, what is the estimated percent increase in net operating income that would result from a % increase in unit sales? lote: Round your intermediate calculations and final answer to 2 decimal places