By how much did the firm's capitalized software development costs decrease by in 2019 as compared to 2018?
{"R&D expensed": {"2019": 1355, "2018": 1883}, "Capitalized software development costs": {"2019": 1074, "2018": 1276}, "Total resources expensed for R&D": {"2019": 2430, "2018": 3159}}
capitalized_software_development_costs_2018 = df["Capitalized software development costs"]["2018"]
capitalized_software_development_costs_2019 = df["Capitalized software development costs"]["2019"]
answer = ( capitalized_software_development_costs_2018 - capitalized_software_development_costs_2019 ) / capitalized_software_development_costs_2018 * 100.0