-85.29% is the change from 204 to 30
Calculation steps:
[( 30 - 204 ) ÷ 204] x 100 = -85.29%
Formula
Percentage change = [(30 - 204) / 204] x 100
Subtract the new number by the original number
30 - 204 = -174
-174 ÷ 204 = -0.8529411764705882
-0.8529411764705882 x 100 = -85.29%