-89.41% is the change from 831 to 88
Calculation steps:
[( 88 - 831 ) ÷ 831] x 100 = -89.41%
Formula
Percentage change = [(88 - 831) / 831] x 100
Subtract the new number by the original number
88 - 831 = -743
-743 ÷ 831 = -0.8941034897713598
-0.8941034897713598 x 100 = -89.41%