-3.31% is the change from 968 to 936
Calculation steps:
[( 936 - 968 ) ÷ 968] x 100 = -3.31%
Formula
Percentage change = [(936 - 968) / 968] x 100
Subtract the new number by the original number
936 - 968 = -32
-32 ÷ 968 = -0.03305785123966942
-0.03305785123966942 x 100 = -3.31%