-95.29% is the change from 510 to 24
Calculation steps:
[( 24 - 510 ) ÷ 510] x 100 = -95.29%
Formula
Percentage change = [(24 - 510) / 510] x 100
Subtract the new number by the original number
24 - 510 = -486
-486 ÷ 510 = -0.9529411764705882
-0.9529411764705882 x 100 = -95.29%