-72.35% is the change from 821 to 227
Calculation steps:
[( 227 - 821 ) ÷ 821] x 100 = -72.35%
Formula
Percentage change = [(227 - 821) / 821] x 100
Subtract the new number by the original number
227 - 821 = -594
-594 ÷ 821 = -0.7235079171741778
-0.7235079171741778 x 100 = -72.35%