-46.76% is the change from 340 to 181
Calculation steps:
[( 181 - 340 ) ÷ 340] x 100 = -46.76%
Formula
Percentage change = [(181 - 340) / 340] x 100
Subtract the new number by the original number
181 - 340 = -159
-159 ÷ 340 = -0.4676470588235294
-0.4676470588235294 x 100 = -46.76%