-11.32% is the change from 919 to 815
Calculation steps:
[( 815 - 919 ) ÷ 919] x 100 = -11.32%
Formula
Percentage change = [(815 - 919) / 919] x 100
Subtract the new number by the original number
815 - 919 = -104
-104 ÷ 919 = -0.11316648531011969
-0.11316648531011969 x 100 = -11.32%