-16.59% is the change from 217 to 181
Calculation steps:
[( 181 - 217 ) ÷ 217] x 100 = -16.59%
Formula
Percentage change = [(181 - 217) / 217] x 100
Subtract the new number by the original number
181 - 217 = -36
-36 ÷ 217 = -0.16589861751152074
-0.16589861751152074 x 100 = -16.59%