A manufacturer of cedar shingles has supplied the following data: Bundles of cedar shakes produced and sold 249,000 Sales revenue $ 2,016,900 Variable manufacturing expense $ 973,900 Fixed manufacturing expense $ 483,000 Variable selling and administrative expense $ 258,900 Fixed selling and administrative expense $ 271,000 Net operating income $ 30,100 The company's contribution margin ratio is closest to: (Do not round intermediate calculations. Round your answer to whole percentage.)