-5.06% is the change from 811 to 770
Calculation steps:
[( 770 - 811 ) ÷ 811] x 100 = -5.06%
Formula
Percentage change = [(770 - 811) / 811] x 100
Subtract the new number by the original number
770 - 811 = -41
-41 ÷ 811 = -0.05055487053020962
-0.05055487053020962 x 100 = -5.06%