-10.44% is the change from 910 to 815
Calculation steps:
[( 815 - 910 ) ÷ 910] x 100 = -10.44%
Formula
Percentage change = [(815 - 910) / 910] x 100
Subtract the new number by the original number
815 - 910 = -95
-95 ÷ 910 = -0.1043956043956044
-0.1043956043956044 x 100 = -10.44%