-7.92% is the change from 543 to 500
Calculation steps:
[( 500 - 543 ) ÷ 543] x 100 = -7.92%
Formula
Percentage change = [(500 - 543) / 543] x 100
Subtract the new number by the original number
500 - 543 = -43
-43 ÷ 543 = -0.07918968692449356
-0.07918968692449356 x 100 = -7.92%