-71.23% is the change from 504 to 145
Calculation steps:
[( 145 - 504 ) ÷ 504] x 100 = -71.23%
Formula
Percentage change = [(145 - 504) / 504] x 100
Subtract the new number by the original number
145 - 504 = -359
-359 ÷ 504 = -0.7123015873015873
-0.7123015873015873 x 100 = -71.23%