-17.35% is the change from 784 to 648
Calculation steps:
[( 648 - 784 ) ÷ 784] x 100 = -17.35%
Formula
Percentage change = [(648 - 784) / 784] x 100
Subtract the new number by the original number
648 - 784 = -136
-136 ÷ 784 = -0.17346938775510204
-0.17346938775510204 x 100 = -17.35%