-34.06% is the change from 957 to 631
Calculation steps:
[( 631 - 957 ) ÷ 957] x 100 = -34.06%
Formula
Percentage change = [(631 - 957) / 957] x 100
Subtract the new number by the original number
631 - 957 = -326
-326 ÷ 957 = -0.3406478578892372
-0.3406478578892372 x 100 = -34.06%