-13.14% is the change from 921 to 800
Calculation steps:
[( 800 - 921 ) ÷ 921] x 100 = -13.14%
Formula
Percentage change = [(800 - 921) / 921] x 100
Subtract the new number by the original number
800 - 921 = -121
-121 ÷ 921 = -0.13137893593919653
-0.13137893593919653 x 100 = -13.14%