681.71% is the change from 82 to 641
Calculation steps:
[( 641 - 82 ) ÷ 82] x 100 = 681.71%
Formula
Percentage change = [(641 - 82) / 82] x 100
Subtract the new number by the original number
641 - 82 = 559
559 ÷ 82 = 6.817073170731708
6.817073170731708 x 100 = 681.71%