Determining Common Size Percentages for Cost of Goods Sold

Explanation:

Common size % for cost of goods sold: Cost of goods sold / Net sales

For 2017: $219,400 / $522,200 = 0.4201456 = 42%

For 2016: $135,440 / $423,400 = 0.31988663 = 31.99%

Therefore, the common size percentage for cost of goods sold is 42.0% for 2017 and 32.0% for 2016 based on the provided data from Wheeler, LLC.