Cullumber Corporation produces microwave units. The following per-unit cost information is available: direct materials $38; direct labour $26; variable manufacturing overhead $19; fixed manufacturing overhead $42; variable selling and administrative expenses $16; and fixed selling and administrative expenses $27. Its desired ROI per unit is $29.01. Calculate the markup percentage using variable-cost pricing. (Round answer to 2 decimal places, eg. 15.25%) Markup percentage %