1548.39% is the change from 31 to 511
Calculation steps:
[( 511 - 31 ) ÷ 31] x 100 = 1548.39%
Formula
Percentage change = [(511 - 31) / 31] x 100
Subtract the new number by the original number
511 - 31 = 480
480 ÷ 31 = 15.483870967741936
15.483870967741936 x 100 = 1548.39%