-18.31% is the change from 792 to 647
Calculation steps:
[( 647 - 792 ) ÷ 792] x 100 = -18.31%
Formula
Percentage change = [(647 - 792) / 792] x 100
Subtract the new number by the original number
647 - 792 = -145
-145 ÷ 792 = -0.1830808080808081
-0.1830808080808081 x 100 = -18.31%