On January 1, 2020, the Concord Company ledger shows Equipment $36,000 and Accumulated Depreciation―Equipment $10,100. The depreciation resulted from using the straight-line method with a useful life of 7 years and salvage value of $5,000. On this date, the company concludes that the equipment has a remaining useful life of only 4 years with the same salvage value. Compute the revised annual depreciation.