-54.22% is the change from 675 to 309
Calculation steps:
[( 309 - 675 ) ÷ 675] x 100 = -54.22%
Formula
Percentage change = [(309 - 675) / 675] x 100
Subtract the new number by the original number
309 - 675 = -366
-366 ÷ 675 = -0.5422222222222223
-0.5422222222222223 x 100 = -54.22%