-8.17% is the change from 893 to 820
Calculation steps:
[( 820 - 893 ) ÷ 893] x 100 = -8.17%
Formula
Percentage change = [(820 - 893) / 893] x 100
Subtract the new number by the original number
820 - 893 = -73
-73 ÷ 893 = -0.08174692049272117
-0.08174692049272117 x 100 = -8.17%