-21.07% is the change from 878 to 693
Calculation steps:
[( 693 - 878 ) ÷ 878] x 100 = -21.07%
Formula
Percentage change = [(693 - 878) / 878] x 100
Subtract the new number by the original number
693 - 878 = -185
-185 ÷ 878 = -0.21070615034168566
-0.21070615034168566 x 100 = -21.07%