Off by 80% error "You could wake up one day and see that your €1 million has shrunk to €100.000 overnight." Should be "1 million has shrunk to 900.000" or "1

Off by 80% error "You could wake up one day and see that your €1 million has shrunk to €100.000 overnight." Should be "1 million has shrunk to 900.000" or "1 million has shrunk by 100.000 overnight"