-87.52% is the change from 657 to 82
Calculation steps:
[( 82 - 657 ) ÷ 657] x 100 = -87.52%
Formula
Percentage change = [(82 - 657) / 657] x 100
Subtract the new number by the original number
82 - 657 = -575
-575 ÷ 657 = -0.8751902587519026
-0.8751902587519026 x 100 = -87.52%