-50.29% is the change from 340 to 169
Calculation steps:
[( 169 - 340 ) ÷ 340] x 100 = -50.29%
Formula
Percentage change = [(169 - 340) / 340] x 100
Subtract the new number by the original number
169 - 340 = -171
-171 ÷ 340 = -0.5029411764705882
-0.5029411764705882 x 100 = -50.29%