-1.19% is the change from 168 to 166
Calculation steps:
[( 166 - 168 ) ÷ 168] x 100 = -1.19%
Formula
Percentage change = [(166 - 168) / 168] x 100
Subtract the new number by the original number
166 - 168 = -2
-2 ÷ 168 = -0.011904761904761904
-0.011904761904761904 x 100 = -1.19%