-33.54% is the change from 975 to 648
Calculation steps:
[( 648 - 975 ) ÷ 975] x 100 = -33.54%
Formula
Percentage change = [(648 - 975) / 975] x 100
Subtract the new number by the original number
648 - 975 = -327
-327 ÷ 975 = -0.3353846153846154
-0.3353846153846154 x 100 = -33.54%