-50.22% is the change from 685 to 341
Calculation steps:
[( 341 - 685 ) ÷ 685] x 100 = -50.22%
Formula
Percentage change = [(341 - 685) / 685] x 100
Subtract the new number by the original number
341 - 685 = -344
-344 ÷ 685 = -0.5021897810218978
-0.5021897810218978 x 100 = -50.22%