As a result of this calamity, the population of Ireland decreased by 25%, or 2 million people, in the 1840s
[DOC] [TLE] Legacy of the Great Irish Famine - Wikipedia [PAR] The legacy of the Great Famine followed a catastrophic period of Irish history 
between 1845 and 1852 during which time the population of Ireland was reduced 
by 20 to 25 ...