-34.02% is the change from 823 to 543
Calculation steps:
[( 543 - 823 ) ÷ 823] x 100 = -34.02%
Formula
Percentage change = [(543 - 823) / 823] x 100
Subtract the new number by the original number
543 - 823 = -280
-280 ÷ 823 = -0.3402187120291616
-0.3402187120291616 x 100 = -34.02%