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From a financial point of view, however, it is small change compared to the riches of the Champions League.

He said the company had been forced to temporarily make "small changes" to store operations "to protect you and our business".

The Lib Dems said the support package announced on Friday was "small change" and called for the government to seize Russian assets in Britain to give Ukraine more funding.

Before this year, Maria Gonzalez and her family made small changes to adjust for the higher prices — buying fewer eggs, more chicken, less beef — but she has even less wiggle room these days.

That means as Prof Dimson puts it, "that small changes in growth expectation can lead to large changes in share value", which can effect a large number of companies at the same time.