-87.02% is the change from 809 to 105
Calculation steps:
[( 105 - 809 ) ÷ 809] x 100 = -87.02%
Formula
Percentage change = [(105 - 809) / 809] x 100
Subtract the new number by the original number
105 - 809 = -704
-704 ÷ 809 = -0.8702101359703337
-0.8702101359703337 x 100 = -87.02%