-22.28% is the change from 826 to 642
Calculation steps:
[( 642 - 826 ) ÷ 826] x 100 = -22.28%
Formula
Percentage change = [(642 - 826) / 826] x 100
Subtract the new number by the original number
642 - 826 = -184
-184 ÷ 826 = -0.22276029055690072
-0.22276029055690072 x 100 = -22.28%