-96.23% is the change from 504 to 19
Calculation steps:
[( 19 - 504 ) ÷ 504] x 100 = -96.23%
Formula
Percentage change = [(19 - 504) / 504] x 100
Subtract the new number by the original number
19 - 504 = -485
-485 ÷ 504 = -0.9623015873015873
-0.9623015873015873 x 100 = -96.23%