-61.33% is the change from 662 to 256
Calculation steps:
[( 256 - 662 ) ÷ 662] x 100 = -61.33%
Formula
Percentage change = [(256 - 662) / 662] x 100
Subtract the new number by the original number
256 - 662 = -406
-406 ÷ 662 = -0.6132930513595166
-0.6132930513595166 x 100 = -61.33%