32250% is the change from 2 to 647
Calculation steps:
[( 647 - 2 ) ÷ 2] x 100 = 32250%
Formula
Percentage change = [(647 - 2) / 2] x 100
Subtract the new number by the original number
647 - 2 = 645
645 ÷ 2 = 322.5
322.5 x 100 = 32250%
Example