What is the change in Consolidated Net Income from 2018 to 2019?
{"Consolidated Net Income": {"2019": 19788, "2018": 16039}, "Add: -- Provision for income taxes": {"2019": 2945, "2018": 3584}, "Add: -- Interest expense": {"2019": 4730, "2018": 4833}, "Add: -- Depreciation and amortization expense": {"2019": 16682, "2018": 17403}, "Add: -- Consolidated EBITDA": {"2019": 44145, "2018": 41859}, "Add (Less): -- Other (income) expense, net": {"2019": 2900, "2018": -2364}, "Add (Less): -- Equity in losses of unconsolidated businesses": {"2019": 15, "2018": 186}, "Add (Less): -- Severance charges": {"2019": 204, "2018": 2157}, "Add (Less): -- Acquisition and integration related charges": {"2019": "\u2014", "2018": 531}, "Add (Less): -- Product realignment charges": {"2019": "\u2014", "2018": 450}, "Add (Less): -- Impairment charges": {"2019": 186, "2018": 4591}, "Add (Less): -- Net gain from dispositions of assets and businesses": {"2019": -261, "2018": "\u2014"}, "Add (Less): -- Consolidated Adjusted EBITDA": {"2019": 47189, "2018": 47410}}
consolidated_net_income_2019 = df["Consolidated Net Income"]["2019"]
consolidated_net_income_2018 = df["Consolidated Net Income"]["2018"]
answer = consolidated_net_income_2019 - consolidated_net_income_2018