-78.58% is the change from 817 to 175
Calculation steps:
[( 175 - 817 ) ÷ 817] x 100 = -78.58%
Formula
Percentage change = [(175 - 817) / 817] x 100
Subtract the new number by the original number
175 - 817 = -642
-642 ÷ 817 = -0.7858017135862914
-0.7858017135862914 x 100 = -78.58%