find contribution margin ratio

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 22,400 12,800 9,600 7,968 1,632 $ Required: What is the contribution margin ratio? (Round your answer to 2 decimal places.) Contribution margin ratio %