management 2019s discussion and analysis value of the company 2019s obligation relating to asbestos claims under the ppg settlement arrangement . the legal settlements net of insurance included aftertax charges of $ 80 million for the marvin legal settlement , net of insurance recoveries of $ 11 million , and $ 37 million for the impact of the federal glass class action antitrust legal settlement . results of reportable business segments net sales segment income ( millions ) 2006 2005 2006 2005 .

Table: ( millions ) net sales 2006 net sales 2005 net sales 2006 2005 industrial coatings $ 3236 $ 2921 $ 349 $ 284 performance and applied coatings 3088 2668 514 464 optical and specialty materials 1001 867 223 158 commodity chemicals 1483 1531 285 313 glass 2229 2214 148 123

industrial coatings sales increased $ 315 million or 11% ( 11 % ) in 2006 . sales increased 4% ( 4 % ) due to acquisitions , 4% ( 4 % ) due to increased volumes in the automotive , industrial and packaging coatings operating segments , 2% ( 2 % ) due to higher selling prices , particularly in the industrial and packaging coatings businesses and 1% ( 1 % ) due to the positive effects of foreign currency translation . segment income increased $ 65 million in 2006 . the increase in segment income was primarily due to the impact of increased sales volume , lower overhead and manufacturing costs , and the impact of acquisitions . segment income was reduced by the adverse impact of inflation , which was substantially offset by higher selling prices . performance and applied coatings sales increased $ 420 million or 16% ( 16 % ) in 2006 . sales increased 8% ( 8 % ) due to acquisitions , 4% ( 4 % ) due to higher selling prices in the refinish , aerospace and architectural coatings operating segments , 3% ( 3 % ) due to increased volumes in our aerospace and architectural coatings businesses and 1% ( 1 % ) due to the positive effects of foreign currency translation . segment income increased $ 50 million in 2006 . the increase in segment income was primarily due to the impact of increased sales volume and higher selling prices , which more than offset the impact of inflation . segment income was reduced by increased overhead costs to support growth in our architectural coatings business . optical and specialty materials sales increased $ 134 million or 15% ( 15 % ) in 2006 . sales increased 10% ( 10 % ) due to higher volumes , particularly in optical products and fine chemicals and 5% ( 5 % ) due to acquisitions in our optical products business . segment income increased $ 65 million in 2006 . the absence of the 2005 charge for an asset impairment in our fine chemicals business increased segment income by $ 27 million . the remaining $ 38 million increase in segment income was primarily due to increased volumes , lower manufacturing costs , and the absence of the 2005 hurricane costs of $ 3 million , net of 2006 insurance recoveries , which were only partially offset by increased overhead costs in our optical products business to support growth and the negative impact of inflation . commodity chemicals sales decreased $ 48 million or 3% ( 3 % ) in 2006 . sales decreased 4% ( 4 % ) due to lower chlor-alkali volumes and increased 1% ( 1 % ) due to higher selling prices . segment income decreased $ 28 million in 2006 . the year- over-year decline in segment income was due primarily to lower sales volumes and higher manufacturing costs associated with reduced production levels . the absence of the 2005 charges for direct costs related to hurricanes increased segment income by $ 29 million . the impact of higher selling prices ; lower inflation , primarily natural gas costs , and an insurance recovery of $ 10 million related to the 2005 hurricane losses also increased segment income in 2006 . our fourth-quarter chlor-alkali sales volumes and earnings were negatively impacted by production outages at several customers over the last two months of 2006 . it is uncertain when some of these customers will return to a normal level of production which may impact the sales and earnings of our chlor-alkali business in early 2007 . glass sales increased $ 15 million or 1% ( 1 % ) in 2006 . sales increased 1% ( 1 % ) due to improved volumes resulting from a combination of organic growth and an acquisition . a slight positive impact on sales due to foreign currency translation offset a slight decline in pricing . volumes increased in the performance glazings , automotive replacement glass and services and fiber glass businesses . automotive oem glass volume declined during 2006 . pricing was also up in performance glazings , but declined in the other glass businesses . segment income increased $ 25 million in 2006 . this increase in segment income was primarily the result of higher equity earnings from our asian fiber glass joint ventures , higher royalty income and lower manufacturing and natural gas costs , which more than offset the negative impacts of higher inflation , lower margin mix of sales and reduced selling prices . our fiber glass operating segment made progress during 2006 in achieving our multi-year plan to improve profitability and cash flow . a transformation of our supply chain , which includes production of a more focused product mix at each manufacturing plant , manufacturing cost reduction initiatives and improved equity earnings from our asian joint ventures are the primary focus and represent the critical success factors in this plan . during 2006 , our new joint venture in china started producing high labor content fiber glass reinforcement products , which will allow us to refocus our u.s . production capacity on higher margin , direct process products . the 2006 earnings improvement by our fiber glass operating segment accounted for the bulk of the 2006 improvement in the glass reportable business segment income . 20 2006 ppg annual report and form 10-k 4282_txt .

Question: the 2005 charge for asset impairments in the optical and specialty materials segment represented what percent of pre-impairment earnings for the segment?
Answer: 14.6%
Calculation: divide(27, add(27, 158))