-79.69% is the change from 256 to 52
Calculation steps:
[( 52 - 256 ) ÷ 256] x 100 = -79.69%
Formula
Percentage change = [(52 - 256) / 256] x 100
Subtract the new number by the original number
52 - 256 = -204
-204 ÷ 256 = -0.796875
-0.796875 x 100 = -79.69%