-74.69% is the change from 324 to 82
Calculation steps:
[( 82 - 324 ) ÷ 324] x 100 = -74.69%
Formula
Percentage change = [(82 - 324) / 324] x 100
Subtract the new number by the original number
82 - 324 = -242
-242 ÷ 324 = -0.7469135802469136
-0.7469135802469136 x 100 = -74.69%