-14.84% is the change from 256 to 218
Calculation steps:
[( 218 - 256 ) ÷ 256] x 100 = -14.84%
Formula
Percentage change = [(218 - 256) / 256] x 100
Subtract the new number by the original number
218 - 256 = -38
-38 ÷ 256 = -0.1484375
-0.1484375 x 100 = -14.84%