What is the change in the ending balance between fiscal years 2018 and 2019?
{"Reconciliation of deferred tax assets, net -- Balance at the beginning of": {"2019": 47060, "2018": 140532}, "Reconciliation of deferred tax assets, net -- Deferred tax expense for the year": {"2019": -15916, "2018": -53297}, "Reconciliation of deferred tax assets, net -- Debited to equity": {"2019": -8884, "2018": -40092}, "Reconciliation of deferred tax assets, net -- Adjustment in respect of income tax payable": {"2019": "\u2014", "2018": -83}, "Reconciliation of deferred tax assets, net -- Impact from business combinations": {"2019": -19092, "2018": "\u2014"}, "Reconciliation of deferred tax assets, net -- Currency revaluation impact": {"2019": 44, "2018": "\u2014"}, "Reconciliation of deferred tax assets, net -- Balance at the ending of": {"2019": 3212, "2018": 47060}}
balance_2019_end = df["Reconciliation of deferred tax assets, net -- Balance at the ending of"]["2019"]
balance_2019_start = df["Reconciliation of deferred tax assets, net -- Balance at the beginning of"]["2019"]
answer = balance_2019_end - balance_2019_start