1580.65% is the change from 31 to 521
Calculation steps:
[( 521 - 31 ) ÷ 31] x 100 = 1580.65%
Formula
Percentage change = [(521 - 31) / 31] x 100
Subtract the new number by the original number
521 - 31 = 490
490 ÷ 31 = 15.806451612903226
15.806451612903226 x 100 = 1580.65%