-6.13% is the change from 913 to 857
Calculation steps:
[( 857 - 913 ) ÷ 913] x 100 = -6.13%
Formula
Percentage change = [(857 - 913) / 913] x 100
Subtract the new number by the original number
857 - 913 = -56
-56 ÷ 913 = -0.06133625410733844
-0.06133625410733844 x 100 = -6.13%