-5.37% is the change from 820 to 776
Calculation steps:
[( 776 - 820 ) ÷ 820] x 100 = -5.37%
Formula
Percentage change = [(776 - 820) / 820] x 100
Subtract the new number by the original number
776 - 820 = -44
-44 ÷ 820 = -0.05365853658536585
-0.05365853658536585 x 100 = -5.37%