99.64% is the change from 276 to 551
Calculation steps:
[( 551 - 276 ) ÷ 276] x 100 = 99.64%
Formula
Percentage change = [(551 - 276) / 276] x 100
Subtract the new number by the original number
551 - 276 = 275
275 ÷ 276 = 0.9963768115942029
0.9963768115942029 x 100 = 99.64%