-83.61% is the change from 183 to 30
Calculation steps:
[( 30 - 183 ) ÷ 183] x 100 = -83.61%
Formula
Percentage change = [(30 - 183) / 183] x 100
Subtract the new number by the original number
30 - 183 = -153
-153 ÷ 183 = -0.8360655737704918
-0.8360655737704918 x 100 = -83.61%