-89.02% is the change from 510 to 56
Calculation steps:
[( 56 - 510 ) ÷ 510] x 100 = -89.02%
Formula
Percentage change = [(56 - 510) / 510] x 100
Subtract the new number by the original number
56 - 510 = -454
-454 ÷ 510 = -0.8901960784313725
-0.8901960784313725 x 100 = -89.02%