-32.43% is the change from 956 to 646
Calculation steps:
[( 646 - 956 ) ÷ 956] x 100 = -32.43%
Formula
Percentage change = [(646 - 956) / 956] x 100
Subtract the new number by the original number
646 - 956 = -310
-310 ÷ 956 = -0.32426778242677823
-0.32426778242677823 x 100 = -32.43%