72.55% is the change from 550 to 949
Calculation steps:
[( 949 - 550 ) ÷ 550] x 100 = 72.55%
Formula
Percentage change = [(949 - 550) / 550] x 100
Subtract the new number by the original number
949 - 550 = 399
399 ÷ 550 = 0.7254545454545455
0.7254545454545455 x 100 = 72.55%