-83.7% is the change from 184 to 30
Calculation steps:
[( 30 - 184 ) ÷ 184] x 100 = -83.7%
Formula
Percentage change = [(30 - 184) / 184] x 100
Subtract the new number by the original number
30 - 184 = -154
-154 ÷ 184 = -0.8369565217391305
-0.8369565217391305 x 100 = -83.7%