-84.58% is the change from 817 to 126
Calculation steps:
[( 126 - 817 ) ÷ 817] x 100 = -84.58%
Formula
Percentage change = [(126 - 817) / 817] x 100
Subtract the new number by the original number
126 - 817 = -691
-691 ÷ 817 = -0.8457772337821298
-0.8457772337821298 x 100 = -84.58%