1750% is the change from 30 to 555
Calculation steps:
[( 555 - 30 ) ÷ 30] x 100 = 1750%
Formula
Percentage change = [(555 - 30) / 30] x 100
Subtract the new number by the original number
555 - 30 = 525
525 ÷ 30 = 17.5
17.5 x 100 = 1750%
Example