-39.41% is the change from 307 to 186
Calculation steps:
[( 186 - 307 ) ÷ 307] x 100 = -39.41%
Formula
Percentage change = [(186 - 307) / 307] x 100
Subtract the new number by the original number
186 - 307 = -121
-121 ÷ 307 = -0.3941368078175896
-0.3941368078175896 x 100 = -39.41%