-11.8% is the change from 924 to 815
Calculation steps:
[( 815 - 924 ) ÷ 924] x 100 = -11.8%
Formula
Percentage change = [(815 - 924) / 924] x 100
Subtract the new number by the original number
815 - 924 = -109
-109 ÷ 924 = -0.11796536796536797
-0.11796536796536797 x 100 = -11.8%