79.09% is the change from 550 to 985
Calculation steps:
[( 985 - 550 ) ÷ 550] x 100 = 79.09%
Formula
Percentage change = [(985 - 550) / 550] x 100
Subtract the new number by the original number
985 - 550 = 435
435 ÷ 550 = 0.7909090909090909
0.7909090909090909 x 100 = 79.09%