656.1% is the change from 82 to 620
Calculation steps:
[( 620 - 82 ) ÷ 82] x 100 = 656.1%
Formula
Percentage change = [(620 - 82) / 82] x 100
Subtract the new number by the original number
620 - 82 = 538
538 ÷ 82 = 6.560975609756097
6.560975609756097 x 100 = 656.1%