Table:
Year Ended December 31,

2019	2018	2017

Depreciation expense	$2,540	$2,320	$2,149

Amortization expense	4,764	2,158	1,834

Impairment losses	—	19	78

Answer the following question leveraging both the table and the accompanying text, include the steps to get the answer if you wish, but end your response with {"answer": ["ANSWER"], "scale": "SCALE"} (scale blank when not needed).

Text:
GreenSky, Inc. NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) (United States Dollars in thousands, except per share data, unless otherwise stated)
Note 6. Property, Equipment and Software
The following table shows depreciation and amortization expense, as well as recorded impairment losses related to abandoned capitalized software projects that are recorded within general and administrative expense in the Consolidated Statements of Operations. We determined that these software projects would not generate future cash flows through use or disposal to a third party and, as such, the fair value as of the respective reporting dates was $0.

Question: What was the percentage change in impairment losses between 2017 and 2018?

((19-78)/78) * 100, therefore {"answer": "-75.64", "scale": "percent"}