-52.06% is the change from 340 to 163
Calculation steps:
[( 163 - 340 ) ÷ 340] x 100 = -52.06%
Formula
Percentage change = [(163 - 340) / 340] x 100
Subtract the new number by the original number
163 - 340 = -177
-177 ÷ 340 = -0.5205882352941177
-0.5205882352941177 x 100 = -52.06%