-7.18% is the change from 543 to 504
Calculation steps:
[( 504 - 543 ) ÷ 543] x 100 = -7.18%
Formula
Percentage change = [(504 - 543) / 543] x 100
Subtract the new number by the original number
504 - 543 = -39
-39 ÷ 543 = -0.0718232044198895
-0.0718232044198895 x 100 = -7.18%