-0.97% is the change from 827 to 819
Calculation steps:
[( 819 - 827 ) ÷ 827] x 100 = -0.97%
Formula
Percentage change = [(819 - 827) / 827] x 100
Subtract the new number by the original number
819 - 827 = -8
-8 ÷ 827 = -0.009673518742442563
-0.009673518742442563 x 100 = -0.97%