the canliss milling company purchased machinery on january 2, 2019, for $800,000. a five-year life was estimated and no residual value was anticipated. canliss decided to use the straight-line depreciation method and recorded $160,000 in depreciation in 2019 and 2020. early in 2021, the company changed its depreciation method to the sum-of-the-years’-digits (syd) method.