-78.1% is the change from 781 to 171
Calculation steps:
[( 171 - 781 ) ÷ 781] x 100 = -78.1%
Formula
Percentage change = [(171 - 781) / 781] x 100
Subtract the new number by the original number
171 - 781 = -610
-610 ÷ 781 = -0.7810499359795134
-0.7810499359795134 x 100 = -78.1%