67.15% is the change from 551 to 921
Calculation steps:
[( 921 - 551 ) ÷ 551] x 100 = 67.15%
Formula
Percentage change = [(921 - 551) / 551] x 100
Subtract the new number by the original number
921 - 551 = 370
370 ÷ 551 = 0.6715063520871143
0.6715063520871143 x 100 = 67.15%