-80.48% is the change from 502 to 98
Calculation steps:
[( 98 - 502 ) ÷ 502] x 100 = -80.48%
Formula
Percentage change = [(98 - 502) / 502] x 100
Subtract the new number by the original number
98 - 502 = -404
-404 ÷ 502 = -0.8047808764940239
-0.8047808764940239 x 100 = -80.48%