-51.15% is the change from 524 to 256
Calculation steps:
[( 256 - 524 ) ÷ 524] x 100 = -51.15%
Formula
Percentage change = [(256 - 524) / 524] x 100
Subtract the new number by the original number
256 - 524 = -268
-268 ÷ 524 = -0.5114503816793893
-0.5114503816793893 x 100 = -51.15%