-9.05% is the change from 917 to 834
Calculation steps:
[( 834 - 917 ) ÷ 917] x 100 = -9.05%
Formula
Percentage change = [(834 - 917) / 917] x 100
Subtract the new number by the original number
834 - 917 = -83
-83 ÷ 917 = -0.09051254089422028
-0.09051254089422028 x 100 = -9.05%