-10.77% is the change from 919 to 820
Calculation steps:
[( 820 - 919 ) ÷ 919] x 100 = -10.77%
Formula
Percentage change = [(820 - 919) / 919] x 100
Subtract the new number by the original number
820 - 919 = -99
-99 ÷ 919 = -0.10772578890097932
-0.10772578890097932 x 100 = -10.77%