1580% is the change from 30 to 504
Calculation steps:
[( 504 - 30 ) ÷ 30] x 100 = 1580%
Formula
Percentage change = [(504 - 30) / 30] x 100
Subtract the new number by the original number
504 - 30 = 474
474 ÷ 30 = 15.8
15.8 x 100 = 1580%
Example