-57.83% is the change from 607 to 256
Calculation steps:
[( 256 - 607 ) ÷ 607] x 100 = -57.83%
Formula
Percentage change = [(256 - 607) / 607] x 100
Subtract the new number by the original number
256 - 607 = -351
-351 ÷ 607 = -0.5782537067545305
-0.5782537067545305 x 100 = -57.83%