-45.59% is the change from 340 to 185
Calculation steps:
[( 185 - 340 ) ÷ 340] x 100 = -45.59%
Formula
Percentage change = [(185 - 340) / 340] x 100
Subtract the new number by the original number
185 - 340 = -155
-155 ÷ 340 = -0.45588235294117646
-0.45588235294117646 x 100 = -45.59%