-50.81% is the change from 681 to 335
Calculation steps:
[( 335 - 681 ) ÷ 681] x 100 = -50.81%
Formula
Percentage change = [(335 - 681) / 681] x 100
Subtract the new number by the original number
335 - 681 = -346
-346 ÷ 681 = -0.5080763582966226
-0.5080763582966226 x 100 = -50.81%