-17.56% is the change from 786 to 648
Calculation steps:
[( 648 - 786 ) ÷ 786] x 100 = -17.56%
Formula
Percentage change = [(648 - 786) / 786] x 100
Subtract the new number by the original number
648 - 786 = -138
-138 ÷ 786 = -0.17557251908396945
-0.17557251908396945 x 100 = -17.56%