-83.16% is the change from 487 to 82
Calculation steps:
[( 82 - 487 ) ÷ 487] x 100 = -83.16%
Formula
Percentage change = [(82 - 487) / 487] x 100
Subtract the new number by the original number
82 - 487 = -405
-405 ÷ 487 = -0.8316221765913757
-0.8316221765913757 x 100 = -83.16%