78.18% is the change from 550 to 980
Calculation steps:
[( 980 - 550 ) ÷ 550] x 100 = 78.18%
Formula
Percentage change = [(980 - 550) / 550] x 100
Subtract the new number by the original number
980 - 550 = 430
430 ÷ 550 = 0.7818181818181819
0.7818181818181819 x 100 = 78.18%