-1.09% is the change from 183 to 181
Calculation steps:
[( 181 - 183 ) ÷ 183] x 100 = -1.09%
Formula
Percentage change = [(181 - 183) / 183] x 100
Subtract the new number by the original number
181 - 183 = -2
-2 ÷ 183 = -0.01092896174863388
-0.01092896174863388 x 100 = -1.09%