-3.21% is the change from 187 to 181
Calculation steps:
[( 181 - 187 ) ÷ 187] x 100 = -3.21%
Formula
Percentage change = [(181 - 187) / 187] x 100
Subtract the new number by the original number
181 - 187 = -6
-6 ÷ 187 = -0.03208556149732621
-0.03208556149732621 x 100 = -3.21%