Table:
|  |  | Year Ended December 31, |  |  |
| --- | --- | --- | --- | --- |
|  | 2019 |  | 2018 |  |
|  | Amount | % of Revenue | Amount | % of Revenue |
|  |  | (dollars in thousands) |  |  |
| Revenues, net | $49,036 | 100% | $58,631 | 100% |
| Cost of revenues (1) (2) (3) | 22,843 | 47 | 27,154 | 46 |
| Gross profit | 26,193 | 53 | 31,477 | 54 |
| Operating expenses: |  |  |  |  |
| Sales and marketing (1) (2) (3) | 15,836 | 32 | 23,425 | 40 |
| Research and development (1) (2) (3) | 17,845 | 36 | 22,450 | 38 |
| General and administrative (1) (2) (3) | 10,466 | 21 | 13,113 | 22 |
| Impairment of goodwill | 1,910 | 4 | 14,740 | 26 |
| Total operating expenses | 46,037 | 94 | 73,728 | 126 |
| Loss from operations | (19,844) | (40) | (42,251) | (72) |
| Gain on divestiture | 5,064 | 10 | - | - |
| Other income, net | 2,252 | 5 | 1,593 | 3 |
| Loss before (benefit from) provision for income taxes | (12,528) | (26) | (40,658) | (69) |
| (Benefit from) provision for income taxes | (120) | - | 586 | 1 |
| Net loss | $(12,408) | (25)% | $(41,244) | (70)% |
Paragraphs:
Results of Operations
The following table is a summary of our consolidated statements of operations for the specified periods and results of operations as a percentage of revenues for those periods. The period-to-period comparisons of results are not necessarily indicative of results for future periods. Percentage of revenues figures are rounded and therefore may not subtotal exactly.
A discussion regarding our consolidated statements of operations and results of operations as a percentage of revenue for 2019 compared to 2018 is presented below. A discussion regarding our financial condition and results of operations for 2018 compared to 2017 can be found under Item 7 in our Annual Report on Form 10-K for the fiscal year ended December 31, 2018, filed with the SEC on March 14, 2019, which is available free of charge on the SEC’s website at www.sec.go.
(1)  Stock-based compensation expense included in the consolidated statements of operations data above was as follows:
(2)  Amortization of intangible assets included in the consolidated statements of operations data above was as follows:
(3) Restructuring-related expenses included in the consolidated statements of operations data above was as follows:
Question:
What is the company's percentage change in its gross profit from operations between 2018 and 2019?
Answer: (26193 - 31477)/31477  = -16.79