50.27% is the change from 551 to 828
Calculation steps:
[( 828 - 551 ) ÷ 551] x 100 = 50.27%
Formula
Percentage change = [(828 - 551) / 551] x 100
Subtract the new number by the original number
828 - 551 = 277
277 ÷ 551 = 0.5027223230490018
0.5027223230490018 x 100 = 50.27%