-83.27% is the change from 502 to 84
Calculation steps:
[( 84 - 502 ) ÷ 502] x 100 = -83.27%
Formula
Percentage change = [(84 - 502) / 502] x 100
Subtract the new number by the original number
84 - 502 = -418
-418 ÷ 502 = -0.8326693227091634
-0.8326693227091634 x 100 = -83.27%