Table:
|  |  | Years Ended December 31, |  | Change |  |
| --- | --- | --- | --- | --- | --- |
|  | 2019 | 2018 | 2017 | 2019 vs 2018 | 2018 vs 2017 |
| Net sales of continuing operations |  |  |  |  |  |
| Consolidated net sales | $946.9 | $896.9 | $791.8 | 5.6% | 13.3% |
| Consolidated gross profits | $325.7 | $307.7 | $273.2 | 5.8% | 12.6% |
| Consolidated gross margin | 34.4% | 34.3% | 34.5% | 0.1% | (0.2)% |
| Consolidated SD&A costs ** | $260.4 | $245.2 | $227.2 | 6.2% | 7.9% |
| Consolidated SD&A costs ** as % of sales | 27.5% | 27.3% | 28.7% | 0.2% | (1.4)% |
| Consolidated operating income | $66.1 | $61.7 | $45.7 | 7.1% | 35.0% |
| Consolidated operating margin from continuing operations | 7.0% | 6.9% | 5.8% | 0.1% | 1.1% |
| Effective income tax rate | 24.4% | 21.3% | (44.0)% | 3.1% | 65.3% |
| Net income from continuing operations | $50.0 | $49.5 | 65.5 (1) | 1.0% | (24.4)% |
| Net margin from continuing operations | 5.3% | 5.5% | 8.3% | (0.2)% | (2.8)% |
| Income (loss) from discontinued operations, net of tax $ | $(1.5) | $175.2 | $(25.1) | (100.9)% | 798.0% |
Paragraphs:
GAAP Results of Operations
Key Performance Indicators* (in millions):
* excludes discontinued operations (See Note 5 of Notes to Consolidated Financial Statements).
** excludes special charges, net (See Note 5 of Notes to Consolidated Financial Statements).
1 Includes $20.0 million of income tax benefits primarily related to the reversal of valuation allowances against the Company's deferred tax assets and the
impacts of U.S. tax reform enacted in Q4 of 2017.
Question:
What is the change in consolidated gross margins between 2019 vs 2018 and 2018 vs 2017 respectively?
Answer: 0.1%, (0.2)%