Capital Flight. Capital flight occurs when investors lose confidence in an economy so domestic and/or foreign agents rapidly pull their money out of the economy. The economy suffers a rapid, dramatic and large outflow of capital.
Maybe investors believe the economy will suffer lower growth (or negative growth) in the near future so the return on investment in the economy will be lower. Maybe investors believe the economy’s currency will depreciate in the near future so they cannot make a profit by waiting and selling the currency. Maybe investors believe their assets will be seized, this could occur if an authoritarian government came to power.