Oslo Company prepared the following contribution format Income statement based on a sales volume of 1000 units (the relevant range of production is 500 units to 1,500 units) $ Sales Variable expenses Contribution margin Fixed expenses Net operating income 25,400 13,800 11,6ee 7,772 3,828 3 $ Required: What is the contribution margin ratio? (Round your answer to 2 decimal places.) Contibution margin ratio %