What is the percentage change of net cash provided by financing activities from 2017 to 2018?
{"Net cash used in operating activities": {"December 29, 2019": -270413, "December 30, 2018": -543389, "December 31, 2017": -267412}, "Net cash provided by (used in) investing activities": {"December 29, 2019": 21366, "December 30, 2018": 274900, "December 31, 2017": -293084}, "Net cash provided by financing activities": {"December 29, 2019": 344314, "December 30, 2018": 85847, "December 31, 2017": 589932}}
net_cash_2018 = df["Net cash provided by financing activities"]["December 30, 2018"]
net_cash_2017 = df["Net cash provided by financing activities"]["December 31, 2017"]
answer = ( net_cash_2018 - net_cash_2017 ) / net_cash_2017 * 100.0