Singapore and Australia among office locations to see changes, as agency reports better than expected revenue decline of 13% in first half of 2020.
The group admitted another £2.4m in accounting 'adjustments' for past misstatements.
Stock price underwent a temporary bounce as investors considered the move a vote of confidence.
M&C Saatchi's share price fell nearly 6% in London on Wednesday
Former WPP chief seeks to justify retaining his shares in ad giant.
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