-40.51% is the change from 869 to 517
Calculation steps:
[( 517 - 869 ) ÷ 869] x 100 = -40.51%
Formula
Percentage change = [(517 - 869) / 869] x 100
Subtract the new number by the original number
517 - 869 = -352
-352 ÷ 869 = -0.4050632911392405
-0.4050632911392405 x 100 = -40.51%