-16.41% is the change from 256 to 214
Calculation steps:
[( 214 - 256 ) ÷ 256] x 100 = -16.41%
Formula
Percentage change = [(214 - 256) / 256] x 100
Subtract the new number by the original number
214 - 256 = -42
-42 ÷ 256 = -0.1640625
-0.1640625 x 100 = -16.41%