-9.81% is the change from 917 to 827
Calculation steps:
[( 827 - 917 ) ÷ 917] x 100 = -9.81%
Formula
Percentage change = [(827 - 917) / 917] x 100
Subtract the new number by the original number
827 - 917 = -90
-90 ÷ 917 = -0.09814612868047982
-0.09814612868047982 x 100 = -9.81%