-7.42% is the change from 256 to 237
Calculation steps:
[( 237 - 256 ) ÷ 256] x 100 = -7.42%
Formula
Percentage change = [(237 - 256) / 256] x 100
Subtract the new number by the original number
237 - 256 = -19
-19 ÷ 256 = -0.07421875
-0.07421875 x 100 = -7.42%