-54.46% is the change from 672 to 306
Calculation steps:
[( 306 - 672 ) ÷ 672] x 100 = -54.46%
Formula
Percentage change = [(306 - 672) / 672] x 100
Subtract the new number by the original number
306 - 672 = -366
-366 ÷ 672 = -0.5446428571428571
-0.5446428571428571 x 100 = -54.46%