51.35% is the change from 557 to 843
Calculation steps:
[( 843 - 557 ) ÷ 557] x 100 = 51.35%
Formula
Percentage change = [(843 - 557) / 557] x 100
Subtract the new number by the original number
843 - 557 = 286
286 ÷ 557 = 0.5134649910233393
0.5134649910233393 x 100 = 51.35%