-7.01% is the change from 542 to 504
Calculation steps:
[( 504 - 542 ) ÷ 542] x 100 = -7.01%
Formula
Percentage change = [(504 - 542) / 542] x 100
Subtract the new number by the original number
504 - 542 = -38
-38 ÷ 542 = -0.07011070110701106
-0.07011070110701106 x 100 = -7.01%