-89.8% is the change from 510 to 52
Calculation steps:
[( 52 - 510 ) ÷ 510] x 100 = -89.8%
Formula
Percentage change = [(52 - 510) / 510] x 100
Subtract the new number by the original number
52 - 510 = -458
-458 ÷ 510 = -0.8980392156862745
-0.8980392156862745 x 100 = -89.8%