basel iii ( full implementation ) citigroup 2019s capital resources under basel iii ( full implementation ) citi currently estimates that its effective minimum common equity tier 1 capital , tier 1 capital and total capital ratio requirements under the u.s . basel iii rules , on a fully implemented basis and assuming a 3% ( 3 % ) gsib surcharge , may be 10% ( 10 % ) , 11.5% ( 11.5 % ) and 13.5% ( 13.5 % ) , respectively . further , under the u.s . basel iii rules , citi must also comply with a 4% ( 4 % ) minimum tier 1 leverage ratio requirement and an effective 5% ( 5 % ) minimum supplementary leverage ratio requirement . the following tables set forth the capital tiers , total risk-weighted assets , risk-based capital ratios , quarterly adjusted average total assets , total leverage exposure and leverage ratios , assuming full implementation under the u.s . basel iii rules , for citi as of december 31 , 2015 and december 31 , 2014 . citigroup capital components and ratios under basel iii ( full implementation ) december 31 , 2015 december 31 , 2014 ( 1 ) in millions of dollars , except ratios advanced approaches standardized approach advanced approaches standardized approach .

Table:
in millions of dollars except ratios | december 31 2015 advanced approaches | december 31 2015 standardized approach | december 31 2015 advanced approaches | standardized approach
common equity tier 1 capital | $ 146865 | $ 146865 | $ 136597 | $ 136597
tier 1 capital | 164036 | 164036 | 148066 | 148066
total capital ( tier 1 capital + tier 2 capital ) ( 2 ) | 186097 | 198655 | 165454 | 178413
total risk-weighted assets | 1216277 | 1162884 | 1292605 | 1228488
common equity tier 1 capital ratio ( 3 ) ( 4 ) | 12.07% ( 12.07 % ) | 12.63% ( 12.63 % ) | 10.57% ( 10.57 % ) | 11.12% ( 11.12 % )
tier 1 capital ratio ( 3 ) ( 4 ) | 13.49 | 14.11 | 11.45 | 12.05
total capital ratio ( 3 ) ( 4 ) | 15.30 | 17.08 | 12.80 | 14.52
common equity tier 1 capital ratio ( 3 ) ( 4 ) 12.07% ( 12.07 % ) 12.63% ( 12.63 % ) 10.57% ( 10.57 % ) 11.12% ( 11.12 % ) tier 1 capital ratio ( 3 ) ( 4 ) 13.49 14.11 11.45 12.05 total capital ratio ( 3 ) ( 4 ) 15.30 17.08 12.80 14.52 in millions of dollars , except ratios december 31 , 2015 december 31 , 2014 ( 1 ) quarterly adjusted average total assets ( 5 ) $ 1724710 $ 1835637 total leverage exposure ( 6 ) 2317849 2492636 tier 1 leverage ratio ( 4 ) 9.51% ( 9.51 % ) 8.07% ( 8.07 % ) supplementary leverage ratio ( 4 ) 7.08 5.94 ( 1 ) restated to reflect the retrospective adoption of asu 2014-01 for lihtc investments , consistent with current period presentation .
( 2 ) under the advanced approaches framework eligible credit reserves that exceed expected credit losses are eligible for inclusion in tier 2 capital to the extent the excess reserves do not exceed 0.6% ( 0.6 % ) of credit risk-weighted assets , which differs from the standardized approach in which the allowance for credit losses is eligible for inclusion in tier 2 capital up to 1.25% ( 1.25 % ) of credit risk-weighted assets , with any excess allowance for credit losses being deducted in arriving at credit risk-weighted assets .
( 3 ) as of december 31 , 2015 and december 31 , 2014 , citi 2019s common equity tier 1 capital , tier 1 capital , and total capital ratios were the lower derived under the basel iii advanced approaches framework .
( 4 ) citi 2019s basel iii capital ratios and related components , on a fully implemented basis , are non-gaap financial measures .
citi believes these ratios and the related components provide useful information to investors and others by measuring citi 2019s progress against future regulatory capital standards .
( 5 ) tier 1 leverage ratio denominator .
( 6 ) supplementary leverage ratio denominator. .

Question: what is the difference in the total capital ratio between the advanced approaches and the standardized approach at december 31 , 2015?
Answer: -1.78
Calculation: subtract(15.30, 17.08)