3984.62% is the change from 13 to 531
Calculation steps:
[( 531 - 13 ) ÷ 13] x 100 = 3984.62%
Formula
Percentage change = [(531 - 13) / 13] x 100
Subtract the new number by the original number
531 - 13 = 518
518 ÷ 13 = 39.84615384615385
39.84615384615385 x 100 = 3984.62%