-34.5% is the change from 829 to 543
Calculation steps:
[( 543 - 829 ) ÷ 829] x 100 = -34.5%
Formula
Percentage change = [(543 - 829) / 829] x 100
Subtract the new number by the original number
543 - 829 = -286
-286 ÷ 829 = -0.34499396863691195
-0.34499396863691195 x 100 = -34.5%