-51.61% is the change from 529 to 256
Calculation steps:
[( 256 - 529 ) ÷ 529] x 100 = -51.61%
Formula
Percentage change = [(256 - 529) / 529] x 100
Subtract the new number by the original number
256 - 529 = -273
-273 ÷ 529 = -0.5160680529300568
-0.5160680529300568 x 100 = -51.61%