-89.28% is the change from 821 to 88
Calculation steps:
[( 88 - 821 ) ÷ 821] x 100 = -89.28%
Formula
Percentage change = [(88 - 821) / 821] x 100
Subtract the new number by the original number
88 - 821 = -733
-733 ÷ 821 = -0.8928136419001218
-0.8928136419001218 x 100 = -89.28%