Table:
|  |  | Fiscal Years |  |
| --- | --- | --- | --- |
|  | 2019 | 2018 | 2017 |
| Cost of revenue | $2,936 | $3,869 | $3,189 |
| Research and development | 8,551 | 13,448 | 10,565 |
| Selling, general and administrative | 12,305 | 14,620 | 22,581 |
| Total | $23,792 | $31,937 | $36,335 |
Paragraphs:
Share-Based Compensation
The following table shows a summary of share-based compensation expense included in the Consolidated Statements of Operations during the periods presented (in thousands):
Amounts presented above include share-based compensation expense of $0.8 million for fiscal year 2017, which is recorded as discontinued operations related to employees of our Compute business.
As of September 27, 2019, the total unrecognized compensation costs related to outstanding stock options, restricted stock awards and units including awards with time-based, performance-based, and market-based vesting was $47.0 million, which we expect to recognize over a weighted-average period of 2.9 years.
Question:
What is the change in the Selling, general and administrative expense from 2018 to 2019?
Answer: 12305 - 14620 = -2315