-33.94% is the change from 981 to 648
Calculation steps:
[( 648 - 981 ) ÷ 981] x 100 = -33.94%
Formula
Percentage change = [(648 - 981) / 981] x 100
Subtract the new number by the original number
648 - 981 = -333
-333 ÷ 981 = -0.3394495412844037
-0.3394495412844037 x 100 = -33.94%