-1.68% is the change from 893 to 878
Calculation steps:
[( 878 - 893 ) ÷ 893] x 100 = -1.68%
Formula
Percentage change = [(878 - 893) / 893] x 100
Subtract the new number by the original number
878 - 893 = -15
-15 ÷ 893 = -0.0167973124300112
-0.0167973124300112 x 100 = -1.68%