-9.62% is the change from 852 to 770
Calculation steps:
[( 770 - 852 ) ÷ 852] x 100 = -9.62%
Formula
Percentage change = [(770 - 852) / 852] x 100
Subtract the new number by the original number
770 - 852 = -82
-82 ÷ 852 = -0.09624413145539906
-0.09624413145539906 x 100 = -9.62%