512.5% is the change from 56 to 343
Calculation steps:
[( 343 - 56 ) ÷ 56] x 100 = 512.5%
Formula
Percentage change = [(343 - 56) / 56] x 100
Subtract the new number by the original number
343 - 56 = 287
287 ÷ 56 = 5.125
5.125 x 100 = 512.5%
Example