-4.97% is the change from 181 to 172
Calculation steps:
[( 172 - 181 ) ÷ 181] x 100 = -4.97%
Formula
Percentage change = [(172 - 181) / 181] x 100
Subtract the new number by the original number
172 - 181 = -9
-9 ÷ 181 = -0.049723756906077346
-0.049723756906077346 x 100 = -4.97%