Hyder had in the mean-time descended into Tanjore, with severe consequences. After extracting the allegiance of the Maratha king Thuljaji, Hyder plundered the country, destroying cattle and crops. The economic output of Tanjore is estimated to have fallen by 90% between 1780 and 1782. Hyder's ravages were followed by alleged expeditions of plunder launched by the Kallars. The economic devastation wrought by these attacks was so severe that Tanjore's economy did not recover until the start of the 19th century; the era is referred to in local folklore as the "Hyderakalam".