-88.81% is the change from 831 to 93
Calculation steps:
[( 93 - 831 ) ÷ 831] x 100 = -88.81%
Formula
Percentage change = [(93 - 831) / 831] x 100
Subtract the new number by the original number
93 - 831 = -738
-738 ÷ 831 = -0.8880866425992779
-0.8880866425992779 x 100 = -88.81%