-22.34% is the change from 649 to 504
Calculation steps:
[( 504 - 649 ) ÷ 649] x 100 = -22.34%
Formula
Percentage change = [(504 - 649) / 649] x 100
Subtract the new number by the original number
504 - 649 = -145
-145 ÷ 649 = -0.22342064714946072
-0.22342064714946072 x 100 = -22.34%