-18.16% is the change from 936 to 766
Calculation steps:
[( 766 - 936 ) ÷ 936] x 100 = -18.16%
Formula
Percentage change = [(766 - 936) / 936] x 100
Subtract the new number by the original number
766 - 936 = -170
-170 ÷ 936 = -0.18162393162393162
-0.18162393162393162 x 100 = -18.16%