-76.06% is the change from 923 to 221
Calculation steps:
[( 221 - 923 ) ÷ 923] x 100 = -76.06%
Formula
Percentage change = [(221 - 923) / 923] x 100
Subtract the new number by the original number
221 - 923 = -702
-702 ÷ 923 = -0.7605633802816901
-0.7605633802816901 x 100 = -76.06%