-50.15% is the change from 341 to 170
Calculation steps:
[( 170 - 341 ) ÷ 341] x 100 = -50.15%
Formula
Percentage change = [(170 - 341) / 341] x 100
Subtract the new number by the original number
170 - 341 = -171
-171 ÷ 341 = -0.501466275659824
-0.501466275659824 x 100 = -50.15%