-55.91% is the change from 499 to 220
Calculation steps:
[( 220 - 499 ) ÷ 499] x 100 = -55.91%
Formula
Percentage change = [(220 - 499) / 499] x 100
Subtract the new number by the original number
220 - 499 = -279
-279 ÷ 499 = -0.5591182364729459
-0.5591182364729459 x 100 = -55.91%