501.75% is the change from 57 to 343
Calculation steps:
[( 343 - 57 ) ÷ 57] x 100 = 501.75%
Formula
Percentage change = [(343 - 57) / 57] x 100
Subtract the new number by the original number
343 - 57 = 286
286 ÷ 57 = 5.017543859649122
5.017543859649122 x 100 = 501.75%