-11.29% is the change from 921 to 817
Calculation steps:
[( 817 - 921 ) ÷ 921] x 100 = -11.29%
Formula
Percentage change = [(817 - 921) / 921] x 100
Subtract the new number by the original number
817 - 921 = -104
-104 ÷ 921 = -0.11292073832790445
-0.11292073832790445 x 100 = -11.29%