-5.62% is the change from 178 to 168
Calculation steps:
[( 168 - 178 ) ÷ 178] x 100 = -5.62%
Formula
Percentage change = [(168 - 178) / 178] x 100
Subtract the new number by the original number
168 - 178 = -10
-10 ÷ 178 = -0.056179775280898875
-0.056179775280898875 x 100 = -5.62%