1960% is the change from 30 to 618
Calculation steps:
[( 618 - 30 ) ÷ 30] x 100 = 1960%
Formula
Percentage change = [(618 - 30) / 30] x 100
Subtract the new number by the original number
618 - 30 = 588
588 ÷ 30 = 19.6
19.6 x 100 = 1960%
Example