What is the change in the Provision for income taxes from 2018 to 2019?
{"Net loss": {"2019": -52250, "2018": -47515, "2017": -19634}, "Interest and investment (income) expense, net": {"2019": 2979, "2018": 4504, "2017": 216}, "Provision for income taxes": {"2019": 425, "2018": 796, "2017": 47}, "Depreciation and amortization": {"2019": 19671, "2018": 13693, "2017": 10207}, "Loss on extinguishment of convertible notes": {"2019": 1406, "2018": "\u2014", "2017": "\u2014"}, "Stock-based compensation": {"2019": 33489, "2018": 25825, "2017": 9299}, "Adjusted EBITDA": {"2019": 5720, "2018": -2697, "2017": 135}}
provision_for_income_taxes_2019 = df["Provision for income taxes"]["2019"]
provision_for_income_taxes_2018 = df["Provision for income taxes"]["2018"]
answer = provision_for_income_taxes_2019 - provision_for_income_taxes_2018