15.44% is the change from 557 to 643
Calculation steps:
[( 643 - 557 ) ÷ 557] x 100 = 15.44%
Formula
Percentage change = [(643 - 557) / 557] x 100
Subtract the new number by the original number
643 - 557 = 86
86 ÷ 557 = 0.15439856373429084
0.15439856373429084 x 100 = 15.44%