-67.31% is the change from 878 to 287
Calculation steps:
[( 287 - 878 ) ÷ 878] x 100 = -67.31%
Formula
Percentage change = [(287 - 878) / 878] x 100
Subtract the new number by the original number
287 - 878 = -591
-591 ÷ 878 = -0.673120728929385
-0.673120728929385 x 100 = -67.31%