-33.79% is the change from 959 to 635
Calculation steps:
[( 635 - 959 ) ÷ 959] x 100 = -33.79%
Formula
Percentage change = [(635 - 959) / 959] x 100
Subtract the new number by the original number
635 - 959 = -324
-324 ÷ 959 = -0.337851929092805
-0.337851929092805 x 100 = -33.79%