บริษัทใดมีการลดลงของส่วนของผู้ถือหุ้นมากที่สุดจากปี 2021 ถึง 2022?
 Which companies saw the biggest decline in equity from 2021 to 2022?
she_change_2021_2022 = pd.merge(data_2021[['Company', 'Share Holder Equity']], data_2022[['Company', 'Share Holder Equity']], on='Company', suffixes=('_2021', '_2022'))
she_change_2021_2022['SHE Change'] = she_change_2021_2022['Share Holder Equity_2022'] - she_change_2021_2022['Share Holder Equity_2021']
most_decrease_she_company = she_change_2021_2022[she_change_2021_2022['SHE Change'] == she_change_2021_2022['SHE Change'].min()]