-18.9% is the change from 799 to 648
Calculation steps:
[( 648 - 799 ) ÷ 799] x 100 = -18.9%
Formula
Percentage change = [(648 - 799) / 799] x 100
Subtract the new number by the original number
648 - 799 = -151
-151 ÷ 799 = -0.18898623279098872
-0.18898623279098872 x 100 = -18.9%