-71.49% is the change from 898 to 256
Calculation steps:
[( 256 - 898 ) ÷ 898] x 100 = -71.49%
Formula
Percentage change = [(256 - 898) / 898] x 100
Subtract the new number by the original number
256 - 898 = -642
-642 ÷ 898 = -0.7149220489977728
-0.7149220489977728 x 100 = -71.49%