3150% is the change from 16 to 520
Calculation steps:
[( 520 - 16 ) ÷ 16] x 100 = 3150%
Formula
Percentage change = [(520 - 16) / 16] x 100
Subtract the new number by the original number
520 - 16 = 504
504 ÷ 16 = 31.5
31.5 x 100 = 3150%
Example