1770% is the change from 30 to 561
Calculation steps:
[( 561 - 30 ) ÷ 30] x 100 = 1770%
Formula
Percentage change = [(561 - 30) / 30] x 100
Subtract the new number by the original number
561 - 30 = 531
531 ÷ 30 = 17.7
17.7 x 100 = 1770%
Example