-22.72% is the change from 832 to 643
Calculation steps:
[( 643 - 832 ) ÷ 832] x 100 = -22.72%
Formula
Percentage change = [(643 - 832) / 832] x 100
Subtract the new number by the original number
643 - 832 = -189
-189 ÷ 832 = -0.22716346153846154
-0.22716346153846154 x 100 = -22.72%