-94.42% is the change from 502 to 28
Calculation steps:
[( 28 - 502 ) ÷ 502] x 100 = -94.42%
Formula
Percentage change = [(28 - 502) / 502] x 100
Subtract the new number by the original number
28 - 502 = -474
-474 ÷ 502 = -0.9442231075697212
-0.9442231075697212 x 100 = -94.42%