-72.59% is the change from 821 to 225
Calculation steps:
[( 225 - 821 ) ÷ 821] x 100 = -72.59%
Formula
Percentage change = [(225 - 821) / 821] x 100
Subtract the new number by the original number
225 - 821 = -596
-596 ÷ 821 = -0.7259439707673568
-0.7259439707673568 x 100 = -72.59%