-37.9% is the change from 504 to 313
Calculation steps:
[( 313 - 504 ) ÷ 504] x 100 = -37.9%
Formula
Percentage change = [(313 - 504) / 504] x 100
Subtract the new number by the original number
313 - 504 = -191
-191 ÷ 504 = -0.37896825396825395
-0.37896825396825395 x 100 = -37.9%