What is the change in share of annual sales between first quarter and second quarter?
{"Most recent three-year average seasonality -- ": {"First quarter": "First quarter", "Second quarter": "Second quarter", "Third quarter": "Third quarter", "Fourth quarter": "Fourth quarter"}, "Most recent three-year average seasonality -- Sequential change, sales": {"First quarter": -25, "Second quarter": 11, "Third quarter": 4, "Fourth quarter": 17}, "Most recent three-year average seasonality -- Share of annual sales": {"First quarter": 22, "Second quarter": 24, "Third quarter": 25, "Fourth quarter": 29}}
share_second_quarter = df["Most recent three-year average seasonality -- Share of annual sales"]["Second quarter"]
share_first_quarter = df["Most recent three-year average seasonality -- Share of annual sales"]["First quarter"]
answer = share_second_quarter - share_first_quarter