-58.91% is the change from 623 to 256
Calculation steps:
[( 256 - 623 ) ÷ 623] x 100 = -58.91%
Formula
Percentage change = [(256 - 623) / 623] x 100
Subtract the new number by the original number
256 - 623 = -367
-367 ÷ 623 = -0.5890850722311396
-0.5890850722311396 x 100 = -58.91%