-18.51% is the change from 794 to 647
Calculation steps:
[( 647 - 794 ) ÷ 794] x 100 = -18.51%
Formula
Percentage change = [(647 - 794) / 794] x 100
Subtract the new number by the original number
647 - 794 = -147
-147 ÷ 794 = -0.18513853904282115
-0.18513853904282115 x 100 = -18.51%