human
schedule iii page 6 of 6 host hotels & resorts, inc., and subsidiaries host hotels & resorts, l.p., and subsidiaries real estate and accumulated depreciation december 31, 2018 (in millions) (b) the change in accumulated depreciation and amortization of real estate assets for the fiscal years ended december 31, 2018, 2017 and 2016 is as follows:.
| Balance at December 31, 2015 | $5,666 |
| --------- | --------- |
| Depreciation and amortization | 572 |
| Dispositions and other | (159) |
| Depreciation on assets held for sale | (130) |
| Balance at December 31, 2016 | 5,949 |
| Depreciation and amortization | 563 |
| Dispositions and other | (247) |
| Depreciation on assets held for sale | 7 |
| Balance at December 31, 2017 | 6,272 |
| Depreciation and amortization | 546 |
| Dispositions and other | (344) |
| Depreciation on assets held for sale | (101) |
| Balance at December 31, 2018 | $6,373 |
(c) the aggregate cost of real estate for federal income tax purposes is approximately $10458 million at december 31, 2018. (d) the total cost of properties excludes construction-in-progress properties. .
Please answer the following questions with expressions if necessary.
what is the balance of accumulated depreciation and amortization of real estate assets in 2016?
assistant
5949
human
what about in 2015?
assistant
5666
human
what is the net change?
assistant
subtract(5949, 5666)
human
what about the balance if accumulated depreciation and amortization of real estate assets in 2017?
assistant
6272
human
n/a
assistant
5949