-76.17% is the change from 256 to 61
Calculation steps:
[( 61 - 256 ) ÷ 256] x 100 = -76.17%
Formula
Percentage change = [(61 - 256) / 256] x 100
Subtract the new number by the original number
61 - 256 = -195
-195 ÷ 256 = -0.76171875
-0.76171875 x 100 = -76.17%