-66.97% is the change from 775 to 256
Calculation steps:
[( 256 - 775 ) ÷ 775] x 100 = -66.97%
Formula
Percentage change = [(256 - 775) / 775] x 100
Subtract the new number by the original number
256 - 775 = -519
-519 ÷ 775 = -0.6696774193548387
-0.6696774193548387 x 100 = -66.97%