masco corporation notes to consolidated financial statements ( continued ) h . goodwill and other intangible assets ( continued ) goodwill at december 31 , accumulated impairment losses goodwill at december 31 , 2010 additions ( a ) discontinued operations ( b ) pre-tax impairment charge other ( c ) goodwill at december 31 , cabinets and related products . . . . . . . . . . . $ 587 $ ( 364 ) $ 223 $ 2014 $ 2014 $ ( 44 ) $ 2 $ 181 .

Table: gross goodwill at december 31 2010 accumulated impairment losses net goodwill at december 31 2010 additions ( a ) discontinued operations ( b ) pre-tax impairment charge other ( c ) net goodwill at december 31 2011 cabinets and related products $ 587 $ -364 ( 364 ) $ 223 $ 2014 $ 2014 $ -44 ( 44 ) $ 2 $ 181 plumbing products 536 -340 ( 340 ) 196 9 2014 2014 -4 ( 4 ) 201 installation and other services 1819 -762 ( 762 ) 1057 2014 -13 ( 13 ) 2014 2014 1044 decorative architectural products 294 2014 294 2014 2014 -75 ( 75 ) 2014 219 other specialty products 980 -367 ( 367 ) 613 2014 2014 -367 ( 367 ) 2014 246 total $ 4216 $ -1833 ( 1833 ) $ 2383 $ 9 $ -13 ( 13 ) $ -486 ( 486 ) $ -2 ( 2 ) $ 1891

( a ) additions include acquisitions . ( b ) during 2011 , the company reclassified the goodwill related to the business units held for sale . subsequent to the reclassification , the company recognized a charge for those business units expected to be divested at a loss ; the charge included a write-down of goodwill of $ 13 million . ( c ) other principally includes the effect of foreign currency translation and purchase price adjustments related to prior-year acquisitions . in the fourth quarters of 2012 and 2011 , the company completed its annual impairment testing of goodwill and other indefinite-lived intangible assets . the impairment test in 2012 indicated there was no impairment of goodwill for any of the company 2019s reporting units . the impairment test in 2011 indicated that goodwill recorded for certain of the company 2019s reporting units was impaired . the company recognized the non-cash , pre-tax impairment charges , in continuing operations , for goodwill of $ 486 million ( $ 330 million , after tax ) for 2011 . in 2011 , the pre-tax impairment charge in the cabinets and related products segment relates to the european ready-to- assemble cabinet manufacturer and reflects the declining demand for certain products , as well as decreased operating margins . the pre-tax impairment charge in the decorative architectural products segment relates to the builders 2019 hardware business and reflects increasing competitive conditions for that business . the pre-tax impairment charge in the other specialty products segment relates to the north american window and door business and reflects the continuing weak level of new home construction activity in the western u.s. , the reduced levels of repair and remodel activity and the expectation that recovery in these segments will be modestly slower than anticipated . the company then assessed the long-lived assets associated with these business units and determined no impairment was necessary at december 31 , 2011 . other indefinite-lived intangible assets were $ 132 million and $ 174 million at december 31 , 2012 and 2011 , respectively , and principally included registered trademarks . in 2012 and 2011 , the impairment test indicated that the registered trademark for a north american business unit in the other specialty products segment and the registered trademark for a north american business unit in the plumbing products segment ( 2011 only ) were impaired due to changes in the long-term outlook for the business units . the company recognized non-cash , pre-tax impairment charges for other indefinite- lived intangible assets of $ 42 million ( $ 27 million , after tax ) and $ 8 million ( $ 5 million , after tax ) in 2012 and 2011 , respectively . in 2010 , the company recognized non-cash , pre-tax impairment charges for other indefinite-lived intangible assets of $ 10 million ( $ 6 million after tax ) related to the installation and other services segment ( $ 9 million pre-tax ) and the plumbing products segment ( $ 1 million pre-tax ) . .

Question: what percentage of net goodwill at december 31 2011 is comprised of
Answer: 10%
Calculation: divide(181, 1891)