-58.17% is the change from 612 to 256
Calculation steps:
[( 256 - 612 ) ÷ 612] x 100 = -58.17%
Formula
Percentage change = [(256 - 612) / 612] x 100
Subtract the new number by the original number
256 - 612 = -356
-356 ÷ 612 = -0.5816993464052288
-0.5816993464052288 x 100 = -58.17%