-74.4% is the change from 504 to 129
Calculation steps:
[( 129 - 504 ) ÷ 504] x 100 = -74.4%
Formula
Percentage change = [(129 - 504) / 504] x 100
Subtract the new number by the original number
129 - 504 = -375
-375 ÷ 504 = -0.7440476190476191
-0.7440476190476191 x 100 = -74.4%