15.61% is the change from 551 to 637
Calculation steps:
[( 637 - 551 ) ÷ 551] x 100 = 15.61%
Formula
Percentage change = [(637 - 551) / 551] x 100
Subtract the new number by the original number
637 - 551 = 86
86 ÷ 551 = 0.1560798548094374
0.1560798548094374 x 100 = 15.61%