Table:
|  |  | Quarter Ended |  |  |
| --- | --- | --- | --- | --- |
|  | March 31, | June 30, | September 30, | December 31, |
|  | 2019 | 2019 | 2019 | 2019 |
| Revenue | $50,290 | $49,189 | $52,833 | $60,316 |
| Gross profit | $38,040 | $37,918 | $40,913 | $46,876 |
| Net income (loss) | $(12,272) | $(5,771) | $173 | $51 |
| Net loss per share-basic | $(0.16) | $(0.08) | $— | $— |
| Net loss per share-diluted | $(0.16) | $(0.08) | $— | $— |
|  |  | Quarter | Ended |  |
|  | March 31, | June 30, | September 30, | December 31, |
|  | 2018 | 2018 | 2018 | 2018 |
| Revenue | $49,183 | $60,713 | $60,502 | $61,825 |
| Gross profit | $37,299 | $47,526 | $47,488 | $48,014 |
| Net loss | $(19,670) | $(4,532) | $(1,807) | $(1,608) |
| Net loss per share-basic | $(0.27) | $(0.06) | $(0.02) | $(0.02) |
| Net loss per share-diluted | $(0.27) | $(0.06) | $(0.02) | $(0.02) |
Paragraphs:
14. Selected Quarterly Financial Data (Unaudited)
Selected quarterly financial data for 2019 and 2018 is as follows (in thousands, except per share amounts):
Question:
What is the difference in revenue between December 31,2018 to December 31,2019?
Answer: $60316-$61825 = -1509