notes to consolidated financial statements under the regulatory framework for prompt corrective action applicable to gs bank usa , in order to meet the quantitative requirements for being a 201cwell-capitalized 201d depository institution , gs bank usa is required to maintain a tier 1 capital ratio of at least 6% ( 6 % ) , a total capital ratio of at least 10% ( 10 % ) and a tier 1 leverage ratio of at least 5% ( 5 % ) .gs bank usa agreed with the federal reserve board to maintain minimum capital ratios in excess of these 201cwell- capitalized 201d levels .accordingly , for a period of time , gs bank usa is expected to maintain a tier 1 capital ratio of at least 8% ( 8 % ) , a total capital ratio of at least 11% ( 11 % ) and a tier 1 leverage ratio of at least 6% ( 6 % ) .as noted in the table below , gs bank usa was in compliance with these minimum capital requirements as of december 2013 and december 2012 .the table below presents information regarding gs bank usa 2019s regulatory capital ratios under basel i , as implemented by the federal reserve board .the information as of december 2013 reflects the revised market risk regulatory capital requirements , which became effective on january 1 , 2013 .these changes resulted in increased regulatory capital requirements for market risk .the information as of december 2012 is prior to the implementation of these revised market risk regulatory capital requirements. .
[['$ in millions', 'as of december 2013', 'as of december 2012'], ['tier 1 capital', '$ 20086', '$ 20704'], ['tier 2 capital', '$ 116', '$ 39'], ['total capital', '$ 20202', '$ 20743'], ['risk-weighted assets', '$ 134935', '$ 109669'], ['tier 1 capital ratio', '14.9% ( 14.9 % )', '18.9% ( 18.9 % )'], ['total capital ratio', '15.0% ( 15.0 % )', '18.9% ( 18.9 % )'], ['tier 1 leverage ratio', '16.9% ( 16.9 % )', '17.6% ( 17.6 % )']]
the revised capital framework described above is also applicable to gs bank usa , which is an advanced approach banking organization under this framework .gs bank usa has also been informed by the federal reserve board that it has completed a satisfactory parallel run , as required of advanced approach banking organizations under the revised capital framework , and therefore changes to its calculations of rwas will take effect beginning with the second quarter of 2014 .under the revised capital framework , as of january 1 , 2014 , gs bank usa became subject to a new minimum cet1 ratio requirement of 4% ( 4 % ) , increasing to 4.5% ( 4.5 % ) in 2015 .in addition , the revised capital framework changes the standards for 201cwell-capitalized 201d status under prompt corrective action regulations beginning january 1 , 2015 by , among other things , introducing a cet1 ratio requirement of 6.5% ( 6.5 % ) and increasing the tier 1 capital ratio requirement from 6% ( 6 % ) to 8% ( 8 % ) .in addition , commencing january 1 , 2018 , advanced approach banking organizations must have a supplementary leverage ratio of 3% ( 3 % ) or greater .the basel committee published its final guidelines for calculating incremental capital requirements for domestic systemically important banking institutions ( d-sibs ) .these guidelines are complementary to the framework outlined above for g-sibs .the impact of these guidelines on the regulatory capital requirements of gs bank usa will depend on how they are implemented by the banking regulators in the united states .the deposits of gs bank usa are insured by the fdic to the extent provided by law .the federal reserve board requires depository institutions to maintain cash reserves with a federal reserve bank .the amount deposited by the firm 2019s depository institution held at the federal reserve bank was approximately $ 50.39 billion and $ 58.67 billion as of december 2013 and december 2012 , respectively , which exceeded required reserve amounts by $ 50.29 billion and $ 58.59 billion as of december 2013 and december 2012 , respectively .transactions between gs bank usa and its subsidiaries and group inc .and its subsidiaries and affiliates ( other than , generally , subsidiaries of gs bank usa ) are regulated by the federal reserve board .these regulations generally limit the types and amounts of transactions ( including credit extensions from gs bank usa ) that may take place and generally require those transactions to be on market terms or better to gs bank usa .the firm 2019s principal non-u.s .bank subsidiary , gsib , is a wholly-owned credit institution , regulated by the prudential regulation authority ( pra ) and the financial conduct authority ( fca ) and is subject to minimum capital requirements .as of december 2013 and december 2012 , gsib was in compliance with all regulatory capital requirements .goldman sachs 2013 annual report 193 .

Question: in millions , what was the change between 2013 and 2012 in tier 1 capital?
Answer: -618