-78.65% is the change from 801 to 171
Calculation steps:
[( 171 - 801 ) ÷ 801] x 100 = -78.65%
Formula
Percentage change = [(171 - 801) / 801] x 100
Subtract the new number by the original number
171 - 801 = -630
-630 ÷ 801 = -0.7865168539325843
-0.7865168539325843 x 100 = -78.65%