-10.36% is the change from 936 to 839
Calculation steps:
[( 839 - 936 ) ÷ 936] x 100 = -10.36%
Formula
Percentage change = [(839 - 936) / 936] x 100
Subtract the new number by the original number
839 - 936 = -97
-97 ÷ 936 = -0.10363247863247864
-0.10363247863247864 x 100 = -10.36%