-51.42% is the change from 527 to 256
Calculation steps:
[( 256 - 527 ) ÷ 527] x 100 = -51.42%
Formula
Percentage change = [(256 - 527) / 527] x 100
Subtract the new number by the original number
256 - 527 = -271
-271 ÷ 527 = -0.5142314990512334
-0.5142314990512334 x 100 = -51.42%
Example