-10.64% is the change from 188 to 168
Calculation steps:
[( 168 - 188 ) ÷ 188] x 100 = -10.64%
Formula
Percentage change = [(168 - 188) / 188] x 100
Subtract the new number by the original number
168 - 188 = -20
-20 ÷ 188 = -0.10638297872340426
-0.10638297872340426 x 100 = -10.64%