1680% is the change from 30 to 534
Calculation steps:
[( 534 - 30 ) ÷ 30] x 100 = 1680%
Formula
Percentage change = [(534 - 30) / 30] x 100
Subtract the new number by the original number
534 - 30 = 504
504 ÷ 30 = 16.8
16.8 x 100 = 1680%
Example