55.5% is the change from 555 to 863
Calculation steps:
[( 863 - 555 ) ÷ 555] x 100 = 55.5%
Formula
Percentage change = [(863 - 555) / 555] x 100
Subtract the new number by the original number
863 - 555 = 308
308 ÷ 555 = 0.554954954954955
0.554954954954955 x 100 = 55.5%