-22.42% is the change from 504 to 391
Calculation steps:
[( 391 - 504 ) ÷ 504] x 100 = -22.42%
Formula
Percentage change = [(391 - 504) / 504] x 100
Subtract the new number by the original number
391 - 504 = -113
-113 ÷ 504 = -0.22420634920634921
-0.22420634920634921 x 100 = -22.42%