-64.29% is the change from 784 to 280
Calculation steps:
[( 280 - 784 ) ÷ 784] x 100 = -64.29%
Formula
Percentage change = [(280 - 784) / 784] x 100
Subtract the new number by the original number
280 - 784 = -504
-504 ÷ 784 = -0.6428571428571429
-0.6428571428571429 x 100 = -64.29%