Answer and Explanation:
The comparative income statements in common size percentage is as follows:
Particulars Current year Present year 
 Amount % Amount %
Sales $720,000 100 $630,000 100 
Less: 
Cost of Goods 
Sold $565,400 78.53% $291,000 46.19% 
Gross Profit $154,600 21.47% $339,000 53.81% 
Less:
Operating Expenses $129,200 17.94% $268,400 42.60% 
Net Income $25,400 3.53% $70,600 11.21%