-51.24% is the change from 525 to 256
Calculation steps:
[( 256 - 525 ) ÷ 525] x 100 = -51.24%
Formula
Percentage change = [(256 - 525) / 525] x 100
Subtract the new number by the original number
256 - 525 = -269
-269 ÷ 525 = -0.5123809523809524
-0.5123809523809524 x 100 = -51.24%