-19.23% is the change from 624 to 504
Calculation steps:
[( 504 - 624 ) ÷ 624] x 100 = -19.23%
Formula
Percentage change = [(504 - 624) / 624] x 100
Subtract the new number by the original number
504 - 624 = -120
-120 ÷ 624 = -0.19230769230769232
-0.19230769230769232 x 100 = -19.23%