-50% is the change from 682 to 341
Calculation steps:
[( 341 - 682 ) ÷ 682] x 100 = -50%
Formula
Percentage change = [(341 - 682) / 682] x 100
Subtract the new number by the original number
341 - 682 = -341
-341 ÷ 682 = -0.5
-0.5 x 100 = -50%
Example