-9.68% is the change from 186 to 168
Calculation steps:
[( 168 - 186 ) ÷ 186] x 100 = -9.68%
Formula
Percentage change = [(168 - 186) / 186] x 100
Subtract the new number by the original number
168 - 186 = -18
-18 ÷ 186 = -0.0967741935483871
-0.0967741935483871 x 100 = -9.68%