-79.47% is the change from 833 to 171
Calculation steps:
[( 171 - 833 ) ÷ 833] x 100 = -79.47%
Formula
Percentage change = [(171 - 833) / 833] x 100
Subtract the new number by the original number
171 - 833 = -662
-662 ÷ 833 = -0.7947178871548619
-0.7947178871548619 x 100 = -79.47%