-33.23% is the change from 960 to 641
Calculation steps:
[( 641 - 960 ) ÷ 960] x 100 = -33.23%
Formula
Percentage change = [(641 - 960) / 960] x 100
Subtract the new number by the original number
641 - 960 = -319
-319 ÷ 960 = -0.33229166666666665
-0.33229166666666665 x 100 = -33.23%