-38.54% is the change from 833 to 512
Calculation steps:
[( 512 - 833 ) ÷ 833] x 100 = -38.54%
Formula
Percentage change = [(512 - 833) / 833] x 100
Subtract the new number by the original number
512 - 833 = -321
-321 ÷ 833 = -0.38535414165666265
-0.38535414165666265 x 100 = -38.54%