-40.31% is the change from 655 to 391
Calculation steps:
[( 391 - 655 ) ÷ 655] x 100 = -40.31%
Formula
Percentage change = [(391 - 655) / 655] x 100
Subtract the new number by the original number
391 - 655 = -264
-264 ÷ 655 = -0.4030534351145038
-0.4030534351145038 x 100 = -40.31%