-40.15% is the change from 660 to 395
Calculation steps:
[( 395 - 660 ) ÷ 660] x 100 = -40.15%
Formula
Percentage change = [(395 - 660) / 660] x 100
Subtract the new number by the original number
395 - 660 = -265
-265 ÷ 660 = -0.4015151515151515
-0.4015151515151515 x 100 = -40.15%