-22.06% is the change from 825 to 643
Calculation steps:
[( 643 - 825 ) ÷ 825] x 100 = -22.06%
Formula
Percentage change = [(643 - 825) / 825] x 100
Subtract the new number by the original number
643 - 825 = -182
-182 ÷ 825 = -0.2206060606060606
-0.2206060606060606 x 100 = -22.06%