-70.39% is the change from 878 to 260
Calculation steps:
[( 260 - 878 ) ÷ 878] x 100 = -70.39%
Formula
Percentage change = [(260 - 878) / 878] x 100
Subtract the new number by the original number
260 - 878 = -618
-618 ÷ 878 = -0.7038724373576309
-0.7038724373576309 x 100 = -70.39%