What was the percentage change in income taxes paid, net of refunds between 2018 and 2019?
{"Non-cash Investing and Financing Activities: -- Capital expenditures incurred but not paid": {"April 26, 2019": 9, "April 27, 2018": 24, "April 28, 2017": 19}, "Non-cash Investing and Financing Activities: -- Non-cash extinguishment of sale-leaseback financing obligations": {"April 26, 2019": "$ \u2014", "April 27, 2018": 130, "April 28, 2017": 19}, "Supplemental Cash Flow Information: -- Income taxes paid, net of refunds": {"April 26, 2019": 205, "April 27, 2018": 87, "April 28, 2017": 102}, "Supplemental Cash Flow Information: -- Interest paid": {"April 26, 2019": 53, "April 27, 2018": 58, "April 28, 2017": 44}}
taxes_2019 = df["Supplemental Cash Flow Information: -- Income taxes paid, net of refunds"]["April 26, 2019"]
taxes_2018 = df["Supplemental Cash Flow Information: -- Income taxes paid, net of refunds"]["April 27, 2018"]
answer = (taxes_2019 - taxes_2018) / taxes_2018 * 100.0