2190% is the change from 30 to 687
Calculation steps:
[( 687 - 30 ) ÷ 30] x 100 = 2190%
Formula
Percentage change = [(687 - 30) / 30] x 100
Subtract the new number by the original number
687 - 30 = 657
657 ÷ 30 = 21.9
21.9 x 100 = 2190%
Example