-71.36% is the change from 597 to 171
Calculation steps:
[( 171 - 597 ) ÷ 597] x 100 = -71.36%
Formula
Percentage change = [(171 - 597) / 597] x 100
Subtract the new number by the original number
171 - 597 = -426
-426 ÷ 597 = -0.7135678391959799
-0.7135678391959799 x 100 = -71.36%