-80.84% is the change from 428 to 82
Calculation steps:
[( 82 - 428 ) ÷ 428] x 100 = -80.84%
Formula
Percentage change = [(82 - 428) / 428] x 100
Subtract the new number by the original number
82 - 428 = -346
-346 ÷ 428 = -0.8084112149532711
-0.8084112149532711 x 100 = -80.84%