Read the following texts and table with financial data from an S&P 500 earnings report carefully.Based on the question-answer history (if provided), answer the last question. The answer may require mathematical calculation based on the data provided.


notes to consolidated financial statements the firm permanently reinvests eligible earnings of certain foreign subsidiaries and , accordingly , does not accrue any u.s . income taxes that would arise if such earnings were repatriated . as of december 2012 and december 2011 , this policy resulted in an unrecognized net deferred tax liability of $ 3.75 billion and $ 3.32 billion , respectively , attributable to reinvested earnings of $ 21.69 billion and $ 20.63 billion , respectively . unrecognized tax benefits the firm recognizes tax positions in the financial statements only when it is more likely than not that the position will be sustained on examination by the relevant taxing authority based on the technical merits of the position . a position that meets this standard is measured at the largest amount of benefit that will more likely than not be realized on settlement . a liability is established for differences between positions taken in a tax return and amounts recognized in the financial statements . as of december 2012 and december 2011 , the accrued liability for interest expense related to income tax matters and income tax penalties was $ 374 million and $ 233 million , respectively . the firm recognized $ 95 million , $ 21 million and $ 28 million of interest and income tax penalties for the years ended december 2012 , december 2011 and december 2010 , respectively . it is reasonably possible that unrecognized tax benefits could change significantly during the twelve months subsequent to december 2012 due to potential audit settlements , however , at this time it is not possible to estimate any potential change . the table below presents the changes in the liability for unrecognized tax benefits . this liability is included in 201cother liabilities and accrued expenses . 201d see note 17 for further information. . <table class='wikitable'><tr><td>1</td><td>in millions</td><td>as of december 2012</td><td>as of december 2011</td><td>as of december 2010</td></tr><tr><td>2</td><td>balance beginning of year</td><td>$ 1887</td><td>$ 2081</td><td>$ 1925</td></tr><tr><td>3</td><td>increases based on tax positions related to the current year</td><td>190</td><td>171</td><td>171</td></tr><tr><td>4</td><td>increases based on tax positions related to prior years</td><td>336</td><td>278</td><td>162</td></tr><tr><td>5</td><td>decreases related to tax positions of prior years</td><td>-109 ( 109 )</td><td>-41 ( 41 )</td><td>-104 ( 104 )</td></tr><tr><td>6</td><td>decreases related to settlements</td><td>-35 ( 35 )</td><td>-638 ( 638 )</td><td>-128 ( 128 )</td></tr><tr><td>7</td><td>acquisitions/ ( dispositions )</td><td>-47 ( 47 )</td><td>47</td><td>56</td></tr><tr><td>8</td><td>exchange rate fluctuations</td><td>15</td><td>-11 ( 11 )</td><td>-1 ( 1 )</td></tr><tr><td>9</td><td>balance end of year</td><td>$ 2237</td><td>$ 1887</td><td>$ 2081</td></tr><tr><td>10</td><td>related deferred income tax asset1</td><td>685</td><td>569</td><td>972</td></tr><tr><td>11</td><td>net unrecognized tax benefit2</td><td>$ 1552</td><td>$ 1318</td><td>$ 1109</td></tr></table> related deferred income tax asset 1 685 569 972 net unrecognized tax benefit 2 $ 1552 $ 1318 $ 1109 1 . included in 201cother assets . 201d see note 12 . 2 . if recognized , the net tax benefit would reduce the firm 2019s effective income tax rate . 194 goldman sachs 2012 annual report .
Question: what was the difference in net unrecognized tax benefit values from 2011 to 2012?
Answer: 234.0
Question: what is the percent change?

0.17754