-3.45% is the change from 522 to 504
Calculation steps:
[( 504 - 522 ) ÷ 522] x 100 = -3.45%
Formula
Percentage change = [(504 - 522) / 522] x 100
Subtract the new number by the original number
504 - 522 = -18
-18 ÷ 522 = -0.034482758620689655
-0.034482758620689655 x 100 = -3.45%