-96.37% is the change from 523 to 19
Calculation steps:
[( 19 - 523 ) ÷ 523] x 100 = -96.37%
Formula
Percentage change = [(19 - 523) / 523] x 100
Subtract the new number by the original number
19 - 523 = -504
-504 ÷ 523 = -0.9636711281070746
-0.9636711281070746 x 100 = -96.37%