-2.81% is the change from 178 to 173
Calculation steps:
[( 173 - 178 ) ÷ 178] x 100 = -2.81%
Formula
Percentage change = [(173 - 178) / 178] x 100
Subtract the new number by the original number
173 - 178 = -5
-5 ÷ 178 = -0.028089887640449437
-0.028089887640449437 x 100 = -2.81%