-18.81% is the change from 792 to 643
Calculation steps:
[( 643 - 792 ) ÷ 792] x 100 = -18.81%
Formula
Percentage change = [(643 - 792) / 792] x 100
Subtract the new number by the original number
643 - 792 = -149
-149 ÷ 792 = -0.18813131313131312
-0.18813131313131312 x 100 = -18.81%