-8.65% is the change from 913 to 834
Calculation steps:
[( 834 - 913 ) ÷ 913] x 100 = -8.65%
Formula
Percentage change = [(834 - 913) / 913] x 100
Subtract the new number by the original number
834 - 913 = -79
-79 ÷ 913 = -0.08652792990142388
-0.08652792990142388 x 100 = -8.65%