-32.95% is the change from 956 to 641
Calculation steps:
[( 641 - 956 ) ÷ 956] x 100 = -32.95%
Formula
Percentage change = [(641 - 956) / 956] x 100
Subtract the new number by the original number
641 - 956 = -315
-315 ÷ 956 = -0.3294979079497908
-0.3294979079497908 x 100 = -32.95%