-61.72% is the change from 256 to 98
Calculation steps:
[( 98 - 256 ) ÷ 256] x 100 = -61.72%
Formula
Percentage change = [(98 - 256) / 256] x 100
Subtract the new number by the original number
98 - 256 = -158
-158 ÷ 256 = -0.6171875
-0.6171875 x 100 = -61.72%