What is the percentage change in Net cash provided by operations from 2017 to 2018?
{"Years Ended December 31, -- (In thousands)": {"2019": 2019, "2018": 2018, "2017": 2017}, "Years Ended December 31, -- Net cash provided by operations": {"2019": 13951, "2018": 16671, "2017": 18204}, "Years Ended December 31, -- Net cash used in investing activities": {"2019": -296243, "2018": -15952, "2017": -11285}, "Years Ended December 31, -- Net cash provided by (used in) financing activities": {"2019": 268740, "2018": -6593, "2017": -367}}
net_cash_2018 = df["Years Ended December 31, -- Net cash provided by operations"]["2018"]
net_cash_2017 = df["Years Ended December 31, -- Net cash provided by operations"]["2017"]
answer = ( net_cash_2018 - net_cash_2017 ) / net_cash_2017 * 100.0