-79.59% is the change from 921 to 188
Calculation steps:
[( 188 - 921 ) ÷ 921] x 100 = -79.59%
Formula
Percentage change = [(188 - 921) / 921] x 100
Subtract the new number by the original number
188 - 921 = -733
-733 ÷ 921 = -0.7958740499457112
-0.7958740499457112 x 100 = -79.59%