-49.55% is the change from 672 to 339
Calculation steps:
[( 339 - 672 ) ÷ 672] x 100 = -49.55%
Formula
Percentage change = [(339 - 672) / 672] x 100
Subtract the new number by the original number
339 - 672 = -333
-333 ÷ 672 = -0.4955357142857143
-0.4955357142857143 x 100 = -49.55%