-79.7% is the change from 921 to 187
Calculation steps:
[( 187 - 921 ) ÷ 921] x 100 = -79.7%
Formula
Percentage change = [(187 - 921) / 921] x 100
Subtract the new number by the original number
187 - 921 = -734
-734 ÷ 921 = -0.7969598262757872
-0.7969598262757872 x 100 = -79.7%