689.09% is the change from 55 to 434
Calculation steps:
[( 434 - 55 ) ÷ 55] x 100 = 689.09%
Formula
Percentage change = [(434 - 55) / 55] x 100
Subtract the new number by the original number
434 - 55 = 379
379 ÷ 55 = 6.890909090909091
6.890909090909091 x 100 = 689.09%