-97.21% is the change from 502 to 14
Calculation steps:
[( 14 - 502 ) ÷ 502] x 100 = -97.21%
Formula
Percentage change = [(14 - 502) / 502] x 100
Subtract the new number by the original number
14 - 502 = -488
-488 ÷ 502 = -0.9721115537848606
-0.9721115537848606 x 100 = -97.21%