-79.31% is the change from 817 to 169
Calculation steps:
[( 169 - 817 ) ÷ 817] x 100 = -79.31%
Formula
Percentage change = [(169 - 817) / 817] x 100
Subtract the new number by the original number
169 - 817 = -648
-648 ÷ 817 = -0.7931456548347613
-0.7931456548347613 x 100 = -79.31%