challenging investment environment with $ 15.0 billion , or 95% ( 95 % ) , of net inflows coming from institutional clients , with the remaining $ 0.8 billion , or 5% ( 5 % ) , generated by retail and hnw clients . defined contribution plans of institutional clients remained a significant driver of flows . this client group added $ 13.1 billion of net new business in 2012 . during the year , americas net inflows of $ 18.5 billion were partially offset by net outflows of $ 2.6 billion collectively from emea and asia-pacific clients . the company 2019s multi-asset strategies include the following : 2022 asset allocation and balanced products represented 52% ( 52 % ) , or $ 140.2 billion , of multi-asset class aum at year-end , up $ 14.1 billion , with growth in aum driven by net new business of $ 1.6 billion and $ 12.4 billion in market and foreign exchange gains . these strategies combine equity , fixed income and alternative components for investors seeking a tailored solution relative to a specific benchmark and within a risk budget . in certain cases , these strategies seek to minimize downside risk through diversification , derivatives strategies and tactical asset allocation decisions . 2022 target date and target risk products ended the year at $ 69.9 billion , up $ 20.8 billion , or 42% ( 42 % ) , since december 31 , 2011 . growth in aum was driven by net new business of $ 14.5 billion , a year-over-year organic growth rate of 30% ( 30 % ) . institutional investors represented 90% ( 90 % ) of target date and target risk aum , with defined contribution plans accounting for over 80% ( 80 % ) of aum . the remaining 10% ( 10 % ) of target date and target risk aum consisted of retail client investments . flows were driven by defined contribution investments in our lifepath and lifepath retirement income ae offerings , which are qualified investment options under the pension protection act of 2006 . these products utilize a proprietary asset allocation model that seeks to balance risk and return over an investment horizon based on the investor 2019s expected retirement timing . 2022 fiduciary management services accounted for 22% ( 22 % ) , or $ 57.7 billion , of multi-asset aum at december 31 , 2012 and increased $ 7.7 billion during the year due to market and foreign exchange gains . these are complex mandates in which pension plan sponsors retain blackrock to assume responsibility for some or all aspects of plan management . these customized services require strong partnership with the clients 2019 investment staff and trustees in order to tailor investment strategies to meet client-specific risk budgets and return objectives . alternatives component changes in alternatives aum ( dollar amounts in millions ) 12/31/2011 net new business acquired market /fx app ( dep ) 12/31/2012 .
what is the percentage change in the balance of alternative assets from 2011 to 2012?
alternatives aum totaled $ 109.8 billion at year-end 2012 , up $ 4.8 billion , or 5% ( 5 % ) , reflecting $ 3.3 billion in portfolio valuation gains and $ 7.0 billion in new assets related to the acquisitions of srpep , which deepened our alternatives footprint in the european and asian markets , and claymore . core alternative outflows of $ 3.9 billion were driven almost exclusively by return of capital to clients . currency net outflows of $ 5.0 billion were partially offset by net inflows of $ 3.5 billion into ishares commodity funds . we continued to make significant investments in our alternatives platform as demonstrated by our acquisition of srpep , successful closes on the renewable power initiative and our build out of an alternatives retail platform , which now stands at nearly $ 10.0 billion in aum . we believe that as alternatives become more conventional and investors adapt their asset allocation strategies to best meet their investment objectives , they will further increase their use of alternative investments to complement core holdings . institutional investors represented 69% ( 69 % ) , or $ 75.8 billion , of alternatives aum with retail and hnw investors comprising an additional 9% ( 9 % ) , or $ 9.7 billion , at year-end 2012 . ishares commodity products accounted for the remaining $ 24.3 billion , or 22% ( 22 % ) , of aum at year-end . alternative clients are geographically diversified with 56% ( 56 % ) , 26% ( 26 % ) , and 18% ( 18 % ) of clients located in the americas , emea and asia-pacific , respectively . the blackrock alternative investors ( 201cbai 201d ) group coordinates our alternative investment efforts , including .