706.1% is the change from 82 to 661
Calculation steps:
[( 661 - 82 ) ÷ 82] x 100 = 706.1%
Formula
Percentage change = [(661 - 82) / 82] x 100
Subtract the new number by the original number
661 - 82 = 579
579 ÷ 82 = 7.060975609756097
7.060975609756097 x 100 = 706.1%