-44.22% is the change from 502 to 280
Calculation steps:
[( 280 - 502 ) ÷ 502] x 100 = -44.22%
Formula
Percentage change = [(280 - 502) / 502] x 100
Subtract the new number by the original number
280 - 502 = -222
-222 ÷ 502 = -0.44223107569721115
-0.44223107569721115 x 100 = -44.22%