-10.21% is the change from 921 to 827
Calculation steps:
[( 827 - 921 ) ÷ 921] x 100 = -10.21%
Formula
Percentage change = [(827 - 921) / 921] x 100
Subtract the new number by the original number
827 - 921 = -94
-94 ÷ 921 = -0.10206297502714441
-0.10206297502714441 x 100 = -10.21%