-33.75% is the change from 957 to 634
Calculation steps:
[( 634 - 957 ) ÷ 957] x 100 = -33.75%
Formula
Percentage change = [(634 - 957) / 957] x 100
Subtract the new number by the original number
634 - 957 = -323
-323 ÷ 957 = -0.3375130616509927
-0.3375130616509927 x 100 = -33.75%