64.55% is the change from 550 to 905
Calculation steps:
[( 905 - 550 ) ÷ 550] x 100 = 64.55%
Formula
Percentage change = [(905 - 550) / 550] x 100
Subtract the new number by the original number
905 - 550 = 355
355 ÷ 550 = 0.6454545454545455
0.6454545454545455 x 100 = 64.55%