34400% is the change from 2 to 690
Calculation steps:
[( 690 - 2 ) ÷ 2] x 100 = 34400%
Formula
Percentage change = [(690 - 2) / 2] x 100
Subtract the new number by the original number
690 - 2 = 688
688 ÷ 2 = 344
344 x 100 = 34400%
Example