jpmorgan chase & co./2017 annual report 53 net interest income excluding cib 2019s markets businesses in addition to reviewing net interest income on a managed basis , management also reviews net interest income excluding net interest income arising from cib 2019s markets businesses to assess the performance of the firm 2019s lending , investing ( including asset-liability management ) and deposit-raising activities . this net interest income is referred to as non-markets related net interest income . cib 2019s markets businesses are fixed income markets and equity markets . management believes that disclosure of non-markets related net interest income provides investors and analysts with another measure by which to analyze the non-markets-related business trends of the firm and provides a comparable measure to other financial institutions that are primarily focused on lending , investing and deposit-raising activities . the data presented below are non-gaap financial measures due to the exclusion of markets related net interest income arising from cib . year ended december 31 , ( in millions , except rates ) 2017 2016 2015 net interest income 2013 managed basis ( a ) ( b ) $ 51410 $ 47292 $ 44620 less : cib markets net interest income ( c ) 4630 6334 5298 net interest income excluding cib markets ( a ) $ 46780 $ 40958 $ 39322 average interest-earning assets $ 2180592 $ 2101604 $ 2088242 less : average cib markets interest-earning assets ( c ) 540835 520307 510292 average interest-earning assets excluding cib markets $ 1639757 $ 1581297 $ 1577950 net interest yield on average interest-earning assets 2013 managed basis 2.36% ( 2.36 % ) 2.25% ( 2.25 % ) 2.14% ( 2.14 % ) net interest yield on average cib markets interest-earning assets ( c ) 0.86 1.22 1.04 net interest yield on average interest-earning assets excluding cib markets 2.85% ( 2.85 % ) 2.59% ( 2.59 % ) 2.49% ( 2.49 % ) ( a ) interest includes the effect of related hedges . taxable-equivalent amounts are used where applicable . ( b ) for a reconciliation of net interest income on a reported and managed basis , see reconciliation from the firm 2019s reported u.s . gaap results to managed basis on page 52 . ( c ) the amounts in this table differ from the prior-period presentation to align with cib 2019s markets businesses . for further information on cib 2019s markets businesses , see page 65 . calculation of certain u.s . gaap and non-gaap financial measures certain u.s . gaap and non-gaap financial measures are calculated as follows : book value per share ( 201cbvps 201d ) common stockholders 2019 equity at period-end / common shares at period-end overhead ratio total noninterest expense / total net revenue return on assets ( 201croa 201d ) reported net income / total average assets return on common equity ( 201croe 201d ) net income* / average common stockholders 2019 equity return on tangible common equity ( 201crotce 201d ) net income* / average tangible common equity tangible book value per share ( 201ctbvps 201d ) tangible common equity at period-end / common shares at period-end * represents net income applicable to common equity .
in 2016 what was the percent of the cib markets net interest income ( c ) as part of the total net interest income 2013 managed basis
jpmorgan chase & co./2017 annual report 53 net interest income excluding cib 2019s markets businesses in addition to reviewing net interest income on a managed basis , management also reviews net interest income excluding net interest income arising from cib 2019s markets businesses to assess the performance of the firm 2019s lending , investing ( including asset-liability management ) and deposit-raising activities . this net interest income is referred to as non-markets related net interest income . cib 2019s markets businesses are fixed income markets and equity markets . management believes that disclosure of non-markets related net interest income provides investors and analysts with another measure by which to analyze the non-markets-related business trends of the firm and provides a comparable measure to other financial institutions that are primarily focused on lending , investing and deposit-raising activities . the data presented below are non-gaap financial measures due to the exclusion of markets related net interest income arising from cib . year ended december 31 , ( in millions , except rates ) 2017 2016 2015 net interest income 2013 managed basis ( a ) ( b ) $ 51410 $ 47292 $ 44620 less : cib markets net interest income ( c ) 4630 6334 5298 net interest income excluding cib markets ( a ) $ 46780 $ 40958 $ 39322 average interest-earning assets $ 2180592 $ 2101604 $ 2088242 less : average cib markets interest-earning assets ( c ) 540835 520307 510292 average interest-earning assets excluding cib markets $ 1639757 $ 1581297 $ 1577950 net interest yield on average interest-earning assets 2013 managed basis 2.36% ( 2.36 % ) 2.25% ( 2.25 % ) 2.14% ( 2.14 % ) net interest yield on average cib markets interest-earning assets ( c ) 0.86 1.22 1.04 net interest yield on average interest-earning assets excluding cib markets 2.85% ( 2.85 % ) 2.59% ( 2.59 % ) 2.49% ( 2.49 % ) ( a ) interest includes the effect of related hedges . taxable-equivalent amounts are used where applicable . ( b ) for a reconciliation of net interest income on a reported and managed basis , see reconciliation from the firm 2019s reported u.s . gaap results to managed basis on page 52 . ( c ) the amounts in this table differ from the prior-period presentation to align with cib 2019s markets businesses . for further information on cib 2019s markets businesses , see page 65 . calculation of certain u.s . gaap and non-gaap financial measures certain u.s . gaap and non-gaap financial measures are calculated as follows : book value per share ( 201cbvps 201d ) common stockholders 2019 equity at period-end / common shares at period-end overhead ratio total noninterest expense / total net revenue return on assets ( 201croa 201d ) reported net income / total average assets return on common equity ( 201croe 201d ) net income* / average common stockholders 2019 equity return on tangible common equity ( 201crotce 201d ) net income* / average tangible common equity tangible book value per share ( 201ctbvps 201d ) tangible common equity at period-end / common shares at period-end * represents net income applicable to common equity .