In above analysis, 2007 is the base year and 2008 is the comparison year. All items on the balance sheet and income statement for the year 2008 have been compared with the items of balance sheet and income statement for the year 2007.The actual changes in items are compared with the expected changes. For example, if management expects a 30% increase in sales revenue but actual increase is only 10%, it needs to be investigated.
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