A $8\%$ OEM Limited had the following income statement information for $2018$ and $2019$ complete verbal analysis common size percentages and trend percentages using $2018$ as the base year common size trend percentages $201820192018201920182019$ sales $$230,000$ $$270,000$ cost of good sold $120,000145,000$ gross profit $$110,000$ $$125,000\mathrm{.}02$ percent evaluate the situation shown as favourable or unfavourable change from $2018$ to $2019$ formally common size equals analysis amount base amount X $100\%10\%$ equals analysis. Amount base. Amount X $100\%$