How to calculate gearing ratio for this annual report?

21 23 12 Current liabilities Trade and other payables Borrowings Lease liabilities Derivative financial instruments Customer deposits and deposits from banks Current tax liabilities Provisions 25 26 (8,922) (1,490) (598) (61) (6,377) (324) (155) (17,927) (4,763) 27 21 23 12 Net current liabilities Non-current liabilities Trade and other payables Borrowings Lease liabilities Derivative financial instruments Customer deposits and deposits from banks Post-employment benefit obligations Deferred tax liabilities Provisions 25 26 29 6 (170) (6,005) (8,968) (887) (1.830) (3,085) (40) (137) (21,122) 13,253 27 Net assets 30 490 Equity Share capital Share premium All other reserves Retained earnings Equity attributable to owners of the parent Non-controlling interests Total equity 5,165 3,658 3,962 13,275 (22) 13,253 Page 2 of 3