pre_text: 10 Earnings per share Basic and diluted earnings per share calculated on an adjusted profit basis are included in Note 2. The dilution is in respect of unexercised share options and the Performance Share Plan.
table: 2019 2018
table: Profit attributable to equity shareholders (£m) 166.6 223.1
table: Weighted average shares (million) 73.7 73.6
table: Dilution (million) 0.2 0.2
table: Diluted weighted average shares (million) 73.9 73.8
table: Basic earnings per share 226.2p 303.1p
table: Diluted earnings per share 225.5p 302.0p
question: Analyse this data from a financial earnings document. What was the change in the profit attributable to equity shareholders from 2018 to 2019?