-60.68% is the change from 651 to 256
Calculation steps:
[( 256 - 651 ) ÷ 651] x 100 = -60.68%
Formula
Percentage change = [(256 - 651) / 651] x 100
Subtract the new number by the original number
256 - 651 = -395
-395 ÷ 651 = -0.6067588325652842
-0.6067588325652842 x 100 = -60.68%