-92.23% is the change from 502 to 39
Calculation steps:
[( 39 - 502 ) ÷ 502] x 100 = -92.23%
Formula
Percentage change = [(39 - 502) / 502] x 100
Subtract the new number by the original number
39 - 502 = -463
-463 ÷ 502 = -0.9223107569721115
-0.9223107569721115 x 100 = -92.23%