-33.13% is the change from 812 to 543
Calculation steps:
[( 543 - 812 ) ÷ 812] x 100 = -33.13%
Formula
Percentage change = [(543 - 812) / 812] x 100
Subtract the new number by the original number
543 - 812 = -269
-269 ÷ 812 = -0.3312807881773399
-0.3312807881773399 x 100 = -33.13%