-52.78% is the change from 826 to 390
Calculation steps:
[( 390 - 826 ) ÷ 826] x 100 = -52.78%
Formula
Percentage change = [(390 - 826) / 826] x 100
Subtract the new number by the original number
390 - 826 = -436
-436 ÷ 826 = -0.5278450363196125
-0.5278450363196125 x 100 = -52.78%