pre_text: 3.3 Fair value estimation (continued)                                                       If one or more of the significant inputs are not based on observable market data, the instrument is included in level 3. Specific valuation techniques used to value financial instruments mainly include: Dealer quotes for similar instruments; The fair value of interest rate swaps is calculated as the present value of the estimated future cash flows based on observable yield curves; and Other techniques, such as discounted cash flow analysis, are used to determine fair value for financial instruments. During the year ended 31 December 2019, there was 1 transfer between level 1 and 2 for recurring fair value measurements. For transfers in and out of level 3 measurements see the following table, which presents the changes of financial instruments in level 3 for the years ended 31 December 2019 and 2018:
table: Financial assets Financial liabilities
table: 2019 2018 2019 2018
table: RMB’Million RMB’Million RMB’Million RMB’Million
table: Opening balance – IAS 39 77,131 2,154
table: Adjustment on adoption of IFRS 9 22,976 –
table: Opening balance – IFRS 9 83,934 100,107 4,466 2,154
table: Additions 39,116 51,185 75 3,301
table: Business combination – – (977) –
table: Disposals/Settlements (6,714) (9,899) (1,193) –
table: Transfers (4,552) (93,151) – –
table: Changes in fair value recognised in other comprehensive income 328 261 – –
table: Changes in fair value recognised in profit or loss* 9,241 30,485 (463) (1,063)
table: Currency translation differences 1,740 4,946 (35) 74
table: Closing balance 123,093 83,934 1,873 4,466
table: * Includes unrealised gains or (losses) recognised in profit or loss attributable to balances held at the end of the reporting period 3,265 6,861 (463) (1,063)
question: Analyse this data from a financial earnings document. How much is the change between 2018 and 2019 currency translation differences of financial assets?