Horizontal Analysis. Mike's Restaurant Comparative Income Statement Years Ended 2019 and 2020 2020 2019 Amount Change % Change Net Sales Revenue 24,000 15,000 Cost of Goods Sold 1,500 800 Gross Profit 22,500 14,200 Depreciation Expense 300 600 Advertising Expense 500 300 Utilities Expense 130 200 Rent Expense 2,000 2,500 Operating Income 19,570 10,600 Interest Expense 170 100 Net Income 19,400 10,500