-50% is the change from 792 to 396
Calculation steps:
[( 396 - 792 ) ÷ 792] x 100 = -50%
Formula
Percentage change = [(396 - 792) / 792] x 100
Subtract the new number by the original number
396 - 792 = -396
-396 ÷ 792 = -0.5
-0.5 x 100 = -50%
Example