-38.38% is the change from 839 to 517
Calculation steps:
[( 517 - 839 ) ÷ 839] x 100 = -38.38%
Formula
Percentage change = [(517 - 839) / 839] x 100
Subtract the new number by the original number
517 - 839 = -322
-322 ÷ 839 = -0.3837902264600715
-0.3837902264600715 x 100 = -38.38%