At the beginning of 2003, Sam corp. purchased office equipment at a cost of $1,200,000. Its useful life was estimated to be ten years with no salvage value. The equipment has been depreciated by the sum-of-the-years digits method. On January 1, 2009, the company changed to the straight-line method.
Evaluate what type of accounting change and describe any steps that should be taken to appropriately report the situation and also what journal entries should document the change?