Common-size and trend percents for Rustynail Company's sales, cost of goods sold, and expenses follow come Determine whether net income increased, decreased, or remained unchanged in this three-year period. on-size Trend Percents Common-Size Percents 2017 2016 2015 2017 2016 2015 100.0% 100.0% 100.0% 105.4% 104.2% 100.0% 63.4 61.9 59.1 113.1 109.1100.0 15.3 148 5.1 106.8 102.1 1000 Sales