-38.79% is the change from 812 to 497
Calculation steps:
[( 497 - 812 ) ÷ 812] x 100 = -38.79%
Formula
Percentage change = [(497 - 812) / 812] x 100
Subtract the new number by the original number
497 - 812 = -315
-315 ÷ 812 = -0.3879310344827586
-0.3879310344827586 x 100 = -38.79%