What was the difference between the planned costs and actual costs incurred for Building and Equipment Relocation?
{"Workforce reduction": {"Planned Costs": 3075, "Actual costs incurred through December 31, 2019": 3340}, "Building and equipment relocation": {"Planned Costs": 9025, "Actual costs incurred through December 31, 2019": 10534}, "Asset impairment charge": {"Planned Costs": "\u2014", "Actual costs incurred through December 31, 2019": 1168}, "Other charges (1)": {"Planned Costs": 1300, "Actual costs incurred through December 31, 2019": 988}, "Restructuring charges": {"Planned Costs": 13400, "Actual costs incurred through December 31, 2019": 16030}}
actual_cost = df["Building and equipment relocation"]["Actual costs incurred through December 31, 2019"]
planned_cost = df["Building and equipment relocation"]["Planned Costs"]
answer = actual_cost - planned_cost