What was the increase / (decrease) in Interest on borrowings from 2018 to 2019?
{"Interest on borrowings 1": {"2019": 746, "2018": 709, "%Chg": 5}, "Interest on post-employment benefits liability": {"2019": 11, "2018": 14, "%Chg": -21}, "Loss on repayment of long-term debt": {"2019": 19, "2018": 28, "%Chg": -32}, "(Gain) loss on foreign exchange": {"2019": -79, "2018": 136, "%Chg": "n/m"}, "Change in fair value of derivative instruments": {"2019": 80, "2018": -95, "%Chg": "n/m"}, "Capitalized interest": {"2019": -19, "2018": -20, "%Chg": -5}, "Other": {"2019": 21, "2018": 21, "%Chg": "-"}, "Finance costs before interest on lease liabilities": {"2019": 779, "2018": 793, "%Chg": -2}, "Interest on lease liabilities 2": {"2019": 61, "2018": "-", "%Chg": "n/m"}, "Total finance costs": {"2019": 840, "2018": 793, "%Chg": 6}}
interest_on_borrowings_1_2019 = df["Interest on borrowings 1"]["2019"]
interest_on_borrowings_1_2018 = df["Interest on borrowings 1"]["2018"]
answer = interest_on_borrowings_1_2019 - interest_on_borrowings_1_2018