66.55% is the change from 550 to 916
Calculation steps:
[( 916 - 550 ) ÷ 550] x 100 = 66.55%
Formula
Percentage change = [(916 - 550) / 550] x 100
Subtract the new number by the original number
916 - 550 = 366
366 ÷ 550 = 0.6654545454545454
0.6654545454545454 x 100 = 66.55%