-20.99% is the change from 181 to 143
Calculation steps:
[( 143 - 181 ) ÷ 181] x 100 = -20.99%
Formula
Percentage change = [(143 - 181) / 181] x 100
Subtract the new number by the original number
143 - 181 = -38
-38 ÷ 181 = -0.20994475138121546
-0.20994475138121546 x 100 = -20.99%