-67.35% is the change from 784 to 256
Calculation steps:
[( 256 - 784 ) ÷ 784] x 100 = -67.35%
Formula
Percentage change = [(256 - 784) / 784] x 100
Subtract the new number by the original number
256 - 784 = -528
-528 ÷ 784 = -0.673469387755102
-0.673469387755102 x 100 = -67.35%