2193.33% is the change from 30 to 688
Calculation steps:
[( 688 - 30 ) ÷ 30] x 100 = 2193.33%
Formula
Percentage change = [(688 - 30) / 30] x 100
Subtract the new number by the original number
688 - 30 = 658
658 ÷ 30 = 21.933333333333334
21.933333333333334 x 100 = 2193.33%