-69.39% is the change from 539 to 165
Calculation steps:
[( 165 - 539 ) ÷ 539] x 100 = -69.39%
Formula
Percentage change = [(165 - 539) / 539] x 100
Subtract the new number by the original number
165 - 539 = -374
-374 ÷ 539 = -0.6938775510204082
-0.6938775510204082 x 100 = -69.39%