-73.21% is the change from 504 to 135
Calculation steps:
[( 135 - 504 ) ÷ 504] x 100 = -73.21%
Formula
Percentage change = [(135 - 504) / 504] x 100
Subtract the new number by the original number
135 - 504 = -369
-369 ÷ 504 = -0.7321428571428571
-0.7321428571428571 x 100 = -73.21%