-2.28% is the change from 920 to 899
Calculation steps:
[( 899 - 920 ) ÷ 920] x 100 = -2.28%
Formula
Percentage change = [(899 - 920) / 920] x 100
Subtract the new number by the original number
899 - 920 = -21
-21 ÷ 920 = -0.02282608695652174
-0.02282608695652174 x 100 = -2.28%