Sesame Company purchased a computer system (equipment) for $89,630 on January 1, 2013. It was depreciated based on a 8-year life and an $15,230 salvage value. On January 1, 2015, Sesame revised these estimates to a total useful life of 4 years and a salvage value of $11,590.

Prepare Sesames entry to record 2015 depreciation expense.