-39.54% is the change from 306 to 185
Calculation steps:
[( 185 - 306 ) ÷ 306] x 100 = -39.54%
Formula
Percentage change = [(185 - 306) / 306] x 100
Subtract the new number by the original number
185 - 306 = -121
-121 ÷ 306 = -0.3954248366013072
-0.3954248366013072 x 100 = -39.54%