-89.14% is the change from 810 to 88
Calculation steps:
[( 88 - 810 ) ÷ 810] x 100 = -89.14%
Formula
Percentage change = [(88 - 810) / 810] x 100
Subtract the new number by the original number
88 - 810 = -722
-722 ÷ 810 = -0.891358024691358
-0.891358024691358 x 100 = -89.14%