50.45% is the change from 551 to 829
Calculation steps:
[( 829 - 551 ) ÷ 551] x 100 = 50.45%
Formula
Percentage change = [(829 - 551) / 551] x 100
Subtract the new number by the original number
829 - 551 = 278
278 ÷ 551 = 0.5045372050816697
0.5045372050816697 x 100 = 50.45%