3.63% is the change from 551 to 571
Calculation steps:
[( 571 - 551 ) ÷ 551] x 100 = 3.63%
Formula
Percentage change = [(571 - 551) / 551] x 100
Subtract the new number by the original number
571 - 551 = 20
20 ÷ 551 = 0.036297640653357534
0.036297640653357534 x 100 = 3.63%