What was the percentage change in Net interest-bearing debt in 2019 from 2018?
{"Borrowings": {"2019": 863.4, "2018": 754.7, "2017": 753.9}, "Loans receivables": {"2019": -4.6, "2018": "-", "2017": "-"}, "Cash and cash equivalents, including restricted cash": {"2019": -72.5, "2018": -127.4, "2017": -134.2}, "Net interest-bearing debt": {"2019": 786.3, "2018": 627.3, "2017": 619.7}}
net_interestbearing_debt_2019 = df["Net interest-bearing debt"]["2019"]
net_interestbearing_debt_2018 = df["Net interest-bearing debt"]["2018"]
answer = (net_interestbearing_debt_2019 - net_interestbearing_debt_2018) / net_interestbearing_debt_2018 * 100.0