-34.2% is the change from 959 to 631
Calculation steps:
[( 631 - 959 ) ÷ 959] x 100 = -34.2%
Formula
Percentage change = [(631 - 959) / 959] x 100
Subtract the new number by the original number
631 - 959 = -328
-328 ÷ 959 = -0.3420229405630866
-0.3420229405630866 x 100 = -34.2%