79.67% is the change from 551 to 990
Calculation steps:
[( 990 - 551 ) ÷ 551] x 100 = 79.67%
Formula
Percentage change = [(990 - 551) / 551] x 100
Subtract the new number by the original number
990 - 551 = 439
439 ÷ 551 = 0.7967332123411979
0.7967332123411979 x 100 = 79.67%