-38.77% is the change from 650 to 398
Calculation steps:
[( 398 - 650 ) ÷ 650] x 100 = -38.77%
Formula
Percentage change = [(398 - 650) / 650] x 100
Subtract the new number by the original number
398 - 650 = -252
-252 ÷ 650 = -0.38769230769230767
-0.38769230769230767 x 100 = -38.77%