-87.36% is the change from 831 to 105
Calculation steps:
[( 105 - 831 ) ÷ 831] x 100 = -87.36%
Formula
Percentage change = [(105 - 831) / 831] x 100
Subtract the new number by the original number
105 - 831 = -726
-726 ÷ 831 = -0.8736462093862816
-0.8736462093862816 x 100 = -87.36%