-58.48% is the change from 171 to 71
Calculation steps:
[( 71 - 171 ) ÷ 171] x 100 = -58.48%
Formula
Percentage change = [(71 - 171) / 171] x 100
Subtract the new number by the original number
71 - 171 = -100
-100 ÷ 171 = -0.5847953216374269
-0.5847953216374269 x 100 = -58.48%