-97.94% is the change from 921 to 19
Calculation steps:
[( 19 - 921 ) ÷ 921] x 100 = -97.94%
Formula
Percentage change = [(19 - 921) / 921] x 100
Subtract the new number by the original number
19 - 921 = -902
-902 ÷ 921 = -0.9793702497285559
-0.9793702497285559 x 100 = -97.94%