-50.58% is the change from 346 to 171
Calculation steps:
[( 171 - 346 ) ÷ 346] x 100 = -50.58%
Formula
Percentage change = [(171 - 346) / 346] x 100
Subtract the new number by the original number
171 - 346 = -175
-175 ÷ 346 = -0.5057803468208093
-0.5057803468208093 x 100 = -50.58%