-69.01% is the change from 171 to 53
Calculation steps:
[( 53 - 171 ) ÷ 171] x 100 = -69.01%
Formula
Percentage change = [(53 - 171) / 171] x 100
Subtract the new number by the original number
53 - 171 = -118
-118 ÷ 171 = -0.6900584795321637
-0.6900584795321637 x 100 = -69.01%