-16.39% is the change from 543 to 454
Calculation steps:
[( 454 - 543 ) ÷ 543] x 100 = -16.39%
Formula
Percentage change = [(454 - 543) / 543] x 100
Subtract the new number by the original number
454 - 543 = -89
-89 ÷ 543 = -0.16390423572744015
-0.16390423572744015 x 100 = -16.39%