-87.15% is the change from 817 to 105
Calculation steps:
[( 105 - 817 ) ÷ 817] x 100 = -87.15%
Formula
Percentage change = [(105 - 817) / 817] x 100
Subtract the new number by the original number
105 - 817 = -712
-712 ÷ 817 = -0.8714810281517748
-0.8714810281517748 x 100 = -87.15%