-68.22% is the change from 538 to 171
Calculation steps:
[( 171 - 538 ) ÷ 538] x 100 = -68.22%
Formula
Percentage change = [(171 - 538) / 538] x 100
Subtract the new number by the original number
171 - 538 = -367
-367 ÷ 538 = -0.6821561338289963
-0.6821561338289963 x 100 = -68.22%