What is the percentage change in game operations and distribution costs between 2018 and 2019?
{"Cost of revenuesproduct sales: -- Product costs": {"Year Ended December 31, 2019": 656, "Year Ended December 31, 2018": 719, "Increase (Decrease)": -63}, "Cost of revenuesproduct sales: -- Software royalties, amortization, intellectual property licenses": {"Year Ended December 31, 2019": 240, "Year Ended December 31, 2018": 371, "Increase (Decrease)": -131}, "Cost of revenuessubscription, licensing, and other revenues: -- Game operations and distribution costs": {"Year Ended December 31, 2019": 965, "Year Ended December 31, 2018": 1028, "Increase (Decrease)": -63}, "Cost of revenuessubscription, licensing, and other revenues: -- Software royalties, amortization, intellectual property licenses": {"Year Ended December 31, 2019": 233, "Year Ended December 31, 2018": 399, "Increase (Decrease)": -166}, "Cost of revenuessubscription, licensing, and other revenues: -- Total cost of revenues": {"Year Ended December 31, 2019": 2094, "Year Ended December 31, 2018": 2517, "Increase (Decrease)": -423}}
game_ops_dist_cost_2019 = df["Cost of revenuessubscription, licensing, and other revenues: -- Game operations and distribution costs"]["Year Ended December 31, 2019"]
game_ops_dist_cost_2018 = df["Cost of revenuessubscription, licensing, and other revenues: -- Game operations and distribution costs"]["Year Ended December 31, 2018"]
answer = (game_ops_dist_cost_2019 - game_ops_dist_cost_2018) / game_ops_dist_cost_2018 * 100.0