-22.15% is the change from 826 to 643
Calculation steps:
[( 643 - 826 ) ÷ 826] x 100 = -22.15%
Formula
Percentage change = [(643 - 826) / 826] x 100
Subtract the new number by the original number
643 - 826 = -183
-183 ÷ 826 = -0.2215496368038741
-0.2215496368038741 x 100 = -22.15%