-79.44% is the change from 817 to 168
Calculation steps:
[( 168 - 817 ) ÷ 817] x 100 = -79.44%
Formula
Percentage change = [(168 - 817) / 817] x 100
Subtract the new number by the original number
168 - 817 = -649
-649 ÷ 817 = -0.7943696450428397
-0.7943696450428397 x 100 = -79.44%