-50.89% is the change from 672 to 330
Calculation steps:
[( 330 - 672 ) ÷ 672] x 100 = -50.89%
Formula
Percentage change = [(330 - 672) / 672] x 100
Subtract the new number by the original number
330 - 672 = -342
-342 ÷ 672 = -0.5089285714285714
-0.5089285714285714 x 100 = -50.89%