-98.83% is the change from 513 to 6
Calculation steps:
[( 6 - 513 ) ÷ 513] x 100 = -98.83%
Formula
Percentage change = [(6 - 513) / 513] x 100
Subtract the new number by the original number
6 - 513 = -507
-507 ÷ 513 = -0.9883040935672515
-0.9883040935672515 x 100 = -98.83%