-9.39% is the change from 543 to 492
Calculation steps:
[( 492 - 543 ) ÷ 543] x 100 = -9.39%
Formula
Percentage change = [(492 - 543) / 543] x 100
Subtract the new number by the original number
492 - 543 = -51
-51 ÷ 543 = -0.09392265193370165
-0.09392265193370165 x 100 = -9.39%