-12.74% is the change from 934 to 815
Calculation steps:
[( 815 - 934 ) ÷ 934] x 100 = -12.74%
Formula
Percentage change = [(815 - 934) / 934] x 100
Subtract the new number by the original number
815 - 934 = -119
-119 ÷ 934 = -0.12740899357601712
-0.12740899357601712 x 100 = -12.74%