-53.32% is the change from 662 to 309
Calculation steps:
[( 309 - 662 ) ÷ 662] x 100 = -53.32%
Formula
Percentage change = [(309 - 662) / 662] x 100
Subtract the new number by the original number
309 - 662 = -353
-353 ÷ 662 = -0.5332326283987915
-0.5332326283987915 x 100 = -53.32%