-63.08% is the change from 539 to 199
Calculation steps:
[( 199 - 539 ) ÷ 539] x 100 = -63.08%
Formula
Percentage change = [(199 - 539) / 539] x 100
Subtract the new number by the original number
199 - 539 = -340
-340 ÷ 539 = -0.6307977736549165
-0.6307977736549165 x 100 = -63.08%