-85.38% is the change from 171 to 25
Calculation steps:
[( 25 - 171 ) ÷ 171] x 100 = -85.38%
Formula
Percentage change = [(25 - 171) / 171] x 100
Subtract the new number by the original number
25 - 171 = -146
-146 ÷ 171 = -0.8538011695906432
-0.8538011695906432 x 100 = -85.38%