Can someone please help me with this Horizontal Analysis?

Holly Company Income Statement 2008 2007 Change $ Change Z Sales 7.000 6,000 Cost of Goods Sold 4,200 3.500 Gross Profit 2.800 2,500 Depreciation expense 200 120 other operating expenses 2,400 2,050 Income from Operations 200 330 Gain on Sale of Equipment 100 Net Income 200 430 Holly Company Comparative Balance Sheet 2008 2007 Change $ Change Z Assets Cash 350 230 Accts Receivable 540 560 Inventory 1,450 1,150 Land 600 Plant & Equipment 1,700 1.700 Accumulated Depreciation (520] Total Assets 4,020 3 320 Liabilities & Equity Accounts Payable TOO 550 Long Term Debt 500 100 Common Stock 800 800 Retained Earnings 2.020 1.870 Total Liability & Equity 4,020 13 020