-50.22% is the change from 675 to 336
Calculation steps:
[( 336 - 675 ) ÷ 675] x 100 = -50.22%
Formula
Percentage change = [(336 - 675) / 675] x 100
Subtract the new number by the original number
336 - 675 = -339
-339 ÷ 675 = -0.5022222222222222
-0.5022222222222222 x 100 = -50.22%