-7.29% is the change from 947 to 878
Calculation steps:
[( 878 - 947 ) ÷ 947] x 100 = -7.29%
Formula
Percentage change = [(878 - 947) / 947] x 100
Subtract the new number by the original number
878 - 947 = -69
-69 ÷ 947 = -0.07286166842661035
-0.07286166842661035 x 100 = -7.29%