-16.97% is the change from 218 to 181
Calculation steps:
[( 181 - 218 ) ÷ 218] x 100 = -16.97%
Formula
Percentage change = [(181 - 218) / 218] x 100
Subtract the new number by the original number
181 - 218 = -37
-37 ÷ 218 = -0.16972477064220184
-0.16972477064220184 x 100 = -16.97%