-33.06% is the change from 968 to 648
Calculation steps:
[( 648 - 968 ) ÷ 968] x 100 = -33.06%
Formula
Percentage change = [(648 - 968) / 968] x 100
Subtract the new number by the original number
648 - 968 = -320
-320 ÷ 968 = -0.3305785123966942
-0.3305785123966942 x 100 = -33.06%