-72.29% is the change from 617 to 171
Calculation steps:
[( 171 - 617 ) ÷ 617] x 100 = -72.29%
Formula
Percentage change = [(171 - 617) / 617] x 100
Subtract the new number by the original number
171 - 617 = -446
-446 ÷ 617 = -0.7228525121555915
-0.7228525121555915 x 100 = -72.29%