52.25% is the change from 555 to 845
Calculation steps:
[( 845 - 555 ) ÷ 555] x 100 = 52.25%
Formula
Percentage change = [(845 - 555) / 555] x 100
Subtract the new number by the original number
845 - 555 = 290
290 ÷ 555 = 0.5225225225225225
0.5225225225225225 x 100 = 52.25%