-3.72% is the change from 188 to 181
Calculation steps:
[( 181 - 188 ) ÷ 188] x 100 = -3.72%
Formula
Percentage change = [(181 - 188) / 188] x 100
Subtract the new number by the original number
181 - 188 = -7
-7 ÷ 188 = -0.03723404255319149
-0.03723404255319149 x 100 = -3.72%