-33.89% is the change from 959 to 634
Calculation steps:
[( 634 - 959 ) ÷ 959] x 100 = -33.89%
Formula
Percentage change = [(634 - 959) / 959] x 100
Subtract the new number by the original number
634 - 959 = -325
-325 ÷ 959 = -0.33889468196037537
-0.33889468196037537 x 100 = -33.89%