-79.04% is the change from 921 to 193
Calculation steps:
[( 193 - 921 ) ÷ 921] x 100 = -79.04%
Formula
Percentage change = [(193 - 921) / 921] x 100
Subtract the new number by the original number
193 - 921 = -728
-728 ÷ 921 = -0.7904451682953312
-0.7904451682953312 x 100 = -79.04%