-62.63% is the change from 685 to 256
Calculation steps:
[( 256 - 685 ) ÷ 685] x 100 = -62.63%
Formula
Percentage change = [(256 - 685) / 685] x 100
Subtract the new number by the original number
256 - 685 = -429
-429 ÷ 685 = -0.6262773722627737
-0.6262773722627737 x 100 = -62.63%