-79.59% is the change from 833 to 170
Calculation steps:
[( 170 - 833 ) ÷ 833] x 100 = -79.59%
Formula
Percentage change = [(170 - 833) / 833] x 100
Subtract the new number by the original number
170 - 833 = -663
-663 ÷ 833 = -0.7959183673469388
-0.7959183673469388 x 100 = -79.59%