What was the percentage change in "increases related to tax positions taken during current fiscal year" from 2017 to 2018?
{"Gross unrecognized tax benefits as of June 1": {"2019": 5592, "2018": 4919, "2017": 4561}, "Increases related to tax positions from prior fiscal years": {"2019": 772, "2018": 200, "2017": 128}, "Decreases related to tax positions from prior fiscal years": {"2019": -135, "2018": -65, "2017": -218}, "Increases related to tax positions taken during current fiscal year": {"2019": 540, "2018": 840, "2017": 595}, "Settlements with tax authorities": {"2019": -153, "2018": -42, "2017": -85}, "Lapses of statutes of limitation": {"2019": -202, "2018": -273, "2017": -47}, "Cumulative translation adjustments and other, net": {"2019": -66, "2018": 13, "2017": -15}, "Total gross unrecognized tax benefits as of May 31": {"2019": 6348, "2018": 5592, "2017": 4919}}
increases_2018 = df["Increases related to tax positions taken during current fiscal year"]["2018"]
increases_2017 = df["Increases related to tax positions taken during current fiscal year"]["2017"]
answer = (increases_2018 - increases_2017) / increases_2017 * 100.0