-34.27% is the change from 960 to 631
Calculation steps:
[( 631 - 960 ) ÷ 960] x 100 = -34.27%
Formula
Percentage change = [(631 - 960) / 960] x 100
Subtract the new number by the original number
631 - 960 = -329
-329 ÷ 960 = -0.34270833333333334
-0.34270833333333334 x 100 = -34.27%