-4.7% is the change from 808 to 770
Calculation steps:
[( 770 - 808 ) ÷ 808] x 100 = -4.7%
Formula
Percentage change = [(770 - 808) / 808] x 100
Subtract the new number by the original number
770 - 808 = -38
-38 ÷ 808 = -0.04702970297029703
-0.04702970297029703 x 100 = -4.7%