-39.41% is the change from 812 to 492
Calculation steps:
[( 492 - 812 ) ÷ 812] x 100 = -39.41%
Formula
Percentage change = [(492 - 812) / 812] x 100
Subtract the new number by the original number
492 - 812 = -320
-320 ÷ 812 = -0.39408866995073893
-0.39408866995073893 x 100 = -39.41%