-7.37% is the change from 543 to 503
Calculation steps:
[( 503 - 543 ) ÷ 543] x 100 = -7.37%
Formula
Percentage change = [(503 - 543) / 543] x 100
Subtract the new number by the original number
503 - 543 = -40
-40 ÷ 543 = -0.07366482504604052
-0.07366482504604052 x 100 = -7.37%