what was the net change in millions in the accumulated depreciation and amortization of real estate assets from 2014 to 2015?
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 , 2017 ( in millions ) ( b ) the change in accumulated depreciation and amortization of real estate assets for the fiscal years ended december 31 , 2017 , 2016 and 2015 is as follows: .

| Balance at December 31, 2014 | $5,283 |
| :--- | :--- |
| Depreciation and amortization | 558 |
| Dispositions and other | (148) |
| Depreciation on assets held for sale | (27) |
| 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 |

( c ) the aggregate cost of real estate for federal income tax purposes is approximately $ 10698 million at december 31 , 2017 . ( d ) the total cost of properties excludes construction-in-progress properties. .

accumulated_depreciation_change = 5666 - 5283
answer = accumulated_depreciation_change