-26.01% is the change from 869 to 643
Calculation steps:
[( 643 - 869 ) ÷ 869] x 100 = -26.01%
Formula
Percentage change = [(643 - 869) / 869] x 100
Subtract the new number by the original number
643 - 869 = -226
-226 ÷ 869 = -0.2600690448791715
-0.2600690448791715 x 100 = -26.01%