-57.69% is the change from 605 to 256
Calculation steps:
[( 256 - 605 ) ÷ 605] x 100 = -57.69%
Formula
Percentage change = [(256 - 605) / 605] x 100
Subtract the new number by the original number
256 - 605 = -349
-349 ÷ 605 = -0.5768595041322314
-0.5768595041322314 x 100 = -57.69%