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): Sales Variable expenses Contribution margin Fixed expenses Net operating income $ 20,600 12,200 8,400 6,468 $ 1,932 Required: What is the contribution margin ratio? (Round your answer to 2 decimal places.) Contribution margin ratio %