-77.74% is the change from 539 to 120
Calculation steps:
[( 120 - 539 ) ÷ 539] x 100 = -77.74%
Formula
Percentage change = [(120 - 539) / 539] x 100
Subtract the new number by the original number
120 - 539 = -419
-419 ÷ 539 = -0.7773654916512059
-0.7773654916512059 x 100 = -77.74%