-67.47% is the change from 784 to 255
Calculation steps:
[( 255 - 784 ) ÷ 784] x 100 = -67.47%
Formula
Percentage change = [(255 - 784) / 784] x 100
Subtract the new number by the original number
255 - 784 = -529
-529 ÷ 784 = -0.6747448979591837
-0.6747448979591837 x 100 = -67.47%