-62.95% is the change from 691 to 256
Calculation steps:
[( 256 - 691 ) ÷ 691] x 100 = -62.95%
Formula
Percentage change = [(256 - 691) / 691] x 100
Subtract the new number by the original number
256 - 691 = -435
-435 ÷ 691 = -0.6295224312590448
-0.6295224312590448 x 100 = -62.95%