-71.41% is the change from 878 to 251
Calculation steps:
[( 251 - 878 ) ÷ 878] x 100 = -71.41%
Formula
Percentage change = [(251 - 878) / 878] x 100
Subtract the new number by the original number
251 - 878 = -627
-627 ÷ 878 = -0.714123006833713
-0.714123006833713 x 100 = -71.41%