1388.37% is the change from 43 to 640
Calculation steps:
[( 640 - 43 ) ÷ 43] x 100 = 1388.37%
Formula
Percentage change = [(640 - 43) / 43] x 100
Subtract the new number by the original number
640 - 43 = 597
597 ÷ 43 = 13.883720930232558
13.883720930232558 x 100 = 1388.37%