-38.01% is the change from 834 to 517
Calculation steps:
[( 517 - 834 ) ÷ 834] x 100 = -38.01%
Formula
Percentage change = [(517 - 834) / 834] x 100
Subtract the new number by the original number
517 - 834 = -317
-317 ÷ 834 = -0.3800959232613909
-0.3800959232613909 x 100 = -38.01%