-99.41% is the change from 510 to 3
Calculation steps:
[( 3 - 510 ) ÷ 510] x 100 = -99.41%
Formula
Percentage change = [(3 - 510) / 510] x 100
Subtract the new number by the original number
3 - 510 = -507
-507 ÷ 510 = -0.9941176470588236
-0.9941176470588236 x 100 = -99.41%