-71.64% is the change from 878 to 249
Calculation steps:
[( 249 - 878 ) ÷ 878] x 100 = -71.64%
Formula
Percentage change = [(249 - 878) / 878] x 100
Subtract the new number by the original number
249 - 878 = -629
-629 ÷ 878 = -0.7164009111617312
-0.7164009111617312 x 100 = -71.64%