-83.43% is the change from 181 to 30
Calculation steps:
[( 30 - 181 ) ÷ 181] x 100 = -83.43%
Formula
Percentage change = [(30 - 181) / 181] x 100
Subtract the new number by the original number
30 - 181 = -151
-151 ÷ 181 = -0.8342541436464088
-0.8342541436464088 x 100 = -83.43%