What is the percentage change in Cash and Investments between 2016 and 2017?
{"Statement of Operations Data (1): -- Net revenues": {"2019": 6489.0, "2018(6)": 7500.0, "2017": 7017.0, "2016": 6608.0, "2015": 4664.0}, "Statement of Operations Data (1): -- Net income (2)": {"2019": 1503.0, "2018(6)": 1848.0, "2017": 273.0, "2016": 966.0, "2015": 892.0}, "Statement of Operations Data (1): -- Basic net income per share": {"2019": 1.96, "2018(6)": 2.43, "2017": 0.36, "2016": 1.3, "2015": 1.21}, "Statement of Operations Data (1): -- Diluted net income per share": {"2019": 1.95, "2018(6)": 2.4, "2017": 0.36, "2016": 1.28, "2015": 1.19}, "Statement of Operations Data (1): -- Cash dividends declared per share": {"2019": 0.37, "2018(6)": 0.34, "2017": 0.3, "2016": 0.26, "2015": 0.23}, "Statement of Operations Data (1): -- Operating cash flows": {"2019": 1831.0, "2018(6)": 1790.0, "2017": 2213.0, "2016": 2155.0, "2015": 1259.0}, "Balance Sheet Data: -- Cash and investments (3)": {"2019": 5863.0, "2018(6)": 4380.0, "2017": 4775.0, "2016": 3271.0, "2015": 1840.0}, "Balance Sheet Data: -- Total assets": {"2019": 19845.0, "2018(6)": 17890.0, "2017": 18668.0, "2016": 17452.0, "2015": 15246.0}, "Balance Sheet Data: -- Long-term debt, net (4)": {"2019": 2675.0, "2018(6)": 2671.0, "2017": 4390.0, "2016": 4887.0, "2015": 4074.0}, "Balance Sheet Data: -- Long-term debt, gross": {"2019": 2700.0, "2018(6)": 2700.0, "2017": 4440.0, "2016": 4940.0, "2015": 4119.0}, "Balance Sheet Data: -- Net debt (5)": {"2019": "\u2014", "2018(6)": "\u2014", "2017": "\u2014", "2016": 1669.0, "2015": 2279.0}}
cash_investments_2017 = df["Balance Sheet Data: -- Cash and investments (3)"]["2017"]
cash_investments_2016 = df["Balance Sheet Data: -- Cash and investments (3)"]["2016"]
answer = (cash_investments_2017 - cash_investments_2016) / cash_investments_2016 * 100.0