63.09% is the change from 550 to 897
Calculation steps:
[( 897 - 550 ) ÷ 550] x 100 = 63.09%
Formula
Percentage change = [(897 - 550) / 550] x 100
Subtract the new number by the original number
897 - 550 = 347
347 ÷ 550 = 0.6309090909090909
0.6309090909090909 x 100 = 63.09%