-79.35% is the change from 833 to 172
Calculation steps:
[( 172 - 833 ) ÷ 833] x 100 = -79.35%
Formula
Percentage change = [(172 - 833) / 833] x 100
Subtract the new number by the original number
172 - 833 = -661
-661 ÷ 833 = -0.7935174069627852
-0.7935174069627852 x 100 = -79.35%